Last school year, the student body of a local university consisted of 30% freshmen, 24% sophomores, 26% juniors, and 20% seniors.A sample of 300 students taken from this year's student body showed the following number of students in each classification. \[\begin{array} { l l } \text { Freshmen } & 83 \\ \text { Sophomores } & 68 \\ \text { Juniors } & 85 \\ \text { Seniors } & 64 \end{array}\] We are interested in determining whether or not there has been a significant change in the classifications between the last school year and this school year.The calculated value for the test statistic equals

A) .54. B) .65. C) 1.66. D) 6.66. A) .54. B) .65. C) 1.66. D) 6.66.

You want to test whether or not the following sample of 30 observations follows a normal distribution.The mean of the sample equals 11.83 and the standard deviation equals 4.53. \[\begin{array} { l l l l l l l l l l } 2 & 3 & 5 & 5 & 7 & 8 & 8 & 9 & 9 & 10 \\ 11 & 11 & 12 & 12 & 12 & 12 & 13 & 13 & 13 & 14 \\ 15 & 15 & 15 & 16 & 16 & 17 & 17 & 18 & 18 & 19 \end{array}\] The expected frequency in the 3rd interval is

A) 3. B) 4. C) 5. D) 10. A) 3. B) 4. C) 5. D) 10.

When individuals in a sample of 150 were asked whether or not they supported capital punishment, the following information was obtained. \[\begin{array} { l l } \text { Do you support } & \text { Number of } \\ \text { capital punishment? } & \text { individuals } \\ \text { Yes } & 40 \\ \text { No } & 60 \\ \text { No Opinion } & 50 \end{array}\] We are interested in determining whether or not the opinions of the individuals (as to Yes, No, and No Opinion) are uniformly distributed.The calculated value for the test statistic equals

A) 2. B) -2. C) 20. D) 4. A) 2. B) -2. C) 20. D) 4.

When individuals in a sample of 150 were asked whether or not they supported capital punishment, the following information was obtained. \[\begin{array} { l l } \text { Do you support } & \text { Number of } \\ \text { capital punishment? } & \text { individuals } \\ \text { Yes } & 40 \\ \text { No } & 60 \\ \text { No Opinion } & 50 \end{array}\] We are interested in determining whether or not the opinions of the individuals (as to Yes, No, and No Opinion) are uniformly distributed.The number of degrees of freedom associated with this problem is

A) 150. B) 149. C) 2. D) 3. A) 150. B) 149. C) 2. D) 3.

You want to test whether or not the following sample of 30 observations follows a normal distribution.The mean of the sample equals 11.83 and the standard deviation equals 4.53. \[\begin{array} { l l l l l l l l l l } 2 & 3 & 5 & 5 & 7 & 8 & 8 & 9 & 9 & 10 \\ 11 & 11 & 12 & 12 & 12 & 12 & 13 & 13 & 13 & 14 \\ 15 & 15 & 15 & 16 & 16 & 17 & 17 & 18 & 18 & 19 \end{array}\] The number of intervals or categories used to test the hypothesis for this problem is

A) 4. B) 5. C) 6. D) 10. A) 4. B) 5. C) 6. D) 10.

When individuals in a sample of 150 were asked whether or not they supported capital punishment, the following information was obtained. \[\begin{array} { l l } \text { Do you support } & \text { Number of } \\ \text { capital punishment? } & \text { individuals } \\ \text { Yes } & 40 \\ \text { No } & 60 \\ \text { No Opinion } & 50 \end{array}\] We are interested in determining whether or not the opinions of the individuals (as to Yes, No, and No Opinion) are uniformly distributed.The conclusion of the test at the 5% level of significance is that the

A) distribution is uniform. B) null hypothesis cannot be rejected. C) distribution might have been normal. D) Marascuilo procedure is more applicable. A) distribution is uniform. B) null hypothesis cannot be rejected. C) distribution might have been normal. D) Marascuilo procedure is more applicable.

The owner of a car wash wants to see if the arrival rate of cars follows a Poisson distribution.In order to test the assumption of a Poisson distribution, a random sample of 150 ten-minute intervals was taken.You are given the following observed frequencies: \(\begin{array} { l c } \text {Number of Cars Arriving }&\text { Frequency}\\ \text { in a 10-Minute Interval }\\ 0 & 3 \\ 1 & 10 \\ 2 & 15 \\ 3 & 23 \\ 4 & 30 \\ 5 & 24 \\ 6 & 20 \\ 7 & 13 \\ 8 & 8 \\ 9 \text { or more } & 4 \\ & 150 \end{array}\) Calculate mean and use Poisson probabilities.The expected frequency of exactly 3 cars arriving in a 10-minute interval is

A) .1533. B) .1743. C) 23. D) 26.145. A) .1533. B) .1743. C) 23. D) 26.145.

The following table shows the number of individuals in a sample of 300 who indicated they support the new tax proposal. \[\begin{array} { l l } \text { Political Party } & \text { Support } \\ \text { Democrats } & 100 \\ \text { Republicans } & 120 \\ \text { Independents } & 80 \end{array}\] We are interested in determining whether or not the opinions of the individuals of the three groups are uniformly distributed.The number of degrees of freedom associated with this problem is

A) 2. B) 3. C) 300. D) 299. A) 2. B) 3. C) 300. D) 299.

The following table shows the number of individuals in a sample of 300 who indicated they support the new tax proposal. \[\begin{array} { l l } \text { Political Party } & \text { Support } \\ \text { Democrats } & 100 \\ \text { Republicans } & 120 \\ \text { Independents } & 80 \end{array}\] We are interested in determining whether or not the opinions of the individuals of the three groups are uniformly distributed.The expected frequency for each group is

A) .333. B) .50. C) 50. D) 100. A) .333. B) .50. C) 50. D) 100.

The following table shows the number of individuals in a sample of 300 who indicated they support the new tax proposal. \[\begin{array} { l l } \text { Political Party } & \text { Support } \\ \text { Democrats } & 100 \\ \text { Republicans } & 120 \\ \text { Independents } & 80 \end{array}\] We are interested in determining whether or not the opinions of the individuals of the three groups are uniformly distributed.The calculated value for the test statistic equals

A) 2. B) 4. C) 0. D) 8. A) 2. B) 4. C) 0. D) 8.

Exam 12: Comparing Multiple Proportions, Test of Independence and Goodness of Fit

In the past, 35% of the students at ABC University were in the Business College, 35% of the students were in the Liberal Arts College, and 30% of the students were in the Education College.To see whether or not the proportions have changed, a sample of 300 students from the university was taken.Ninety of the sample students are in the Business College, 120 are in the Liberal Arts College, and 90 are in the Education College.Using α = .05, the conclusion of the test is that the

(Multiple Choice)

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Question 21

Last school year, the student body of a local university consisted of 30% freshmen, 24% sophomores, 26% juniors, and 20% seniors.A sample of 300 students taken from this year's student body showed the following number of students in each classification. Freshmen 83 Sophomores 68 Juniors 85 Seniors 64 We are interested in determining whether or not there has been a significant change in the classifications between the last school year and this school year.The calculated value for the test statistic equals

(Multiple Choice)

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Question 22

The test for goodness of fit, test of independence, and test of multiple proportions are designed for use with

(Multiple Choice)

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Question 23

The number of degrees of freedom associated with the chi-square distribution in a test of independence is

(Multiple Choice)

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Question 24

You want to test whether or not the following sample of 30 observations follows a normal distribution.The mean of the sample equals 11.83 and the standard deviation equals 4.53. 2 3 5 5 7 8 8 9 9 10 11 11 12 12 12 12 13 13 13 14 15 15 15 16 16 17 17 18 18 19 The expected frequency in the 3rd interval is

(Multiple Choice)

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Question 25

When individuals in a sample of 150 were asked whether or not they supported capital punishment, the following information was obtained. Do you support Number of capital punishment? individuals Yes 40 No 60 No Opinion 50 We are interested in determining whether or not the opinions of the individuals (as to Yes, No, and No Opinion) are uniformly distributed.The calculated value for the test statistic equals

(Multiple Choice)

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Question 26

The properties of a multinomial experiment include all of the following except

(Multiple Choice)

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Question 27

When individuals in a sample of 150 were asked whether or not they supported capital punishment, the following information was obtained. Do you support Number of capital punishment? individuals Yes 40 No 60 No Opinion 50 We are interested in determining whether or not the opinions of the individuals (as to Yes, No, and No Opinion) are uniformly distributed.The number of degrees of freedom associated with this problem is

(Multiple Choice)

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Question 28

You want to test whether or not the following sample of 30 observations follows a normal distribution.The mean of the sample equals 11.83 and the standard deviation equals 4.53. 2 3 5 5 7 8 8 9 9 10 11 11 12 12 12 12 13 13 13 14 15 15 15 16 16 17 17 18 18 19 The number of intervals or categories used to test the hypothesis for this problem is

(Multiple Choice)

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Question 29

In the past, 35% of the students at ABC University were in the Business College, 35% of the students were in the Liberal Arts College, and 30% of the students were in the Education College.To see whether or not the proportions have changed, a sample of 300 students from the university was taken.Ninety of the sample students are in the Business College, 120 are in the Liberal Arts College, and 90 are in the Education College.This problem is an example of a

(Multiple Choice)

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Question 30

In the past, 35% of the students at ABC University were in the Business College, 35% of the students were in the Liberal Arts College, and 30% of the students were in the Education College.To see whether or not the proportions have changed, a sample of 300 students from the university was taken.Ninety of the sample students are in the Business College, 120 are in the Liberal Arts College, and 90 are in the Education College.The hypothesis is to be tested at the 5% level of significance.The critical value from the table equals

(Multiple Choice)

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Question 31

When individuals in a sample of 150 were asked whether or not they supported capital punishment, the following information was obtained. Do you support Number of capital punishment? individuals Yes 40 No 60 No Opinion 50 We are interested in determining whether or not the opinions of the individuals (as to Yes, No, and No Opinion) are uniformly distributed.The conclusion of the test at the 5% level of significance is that the

(Multiple Choice)

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(77)

Question 32

The owner of a car wash wants to see if the arrival rate of cars follows a Poisson distribution.In order to test the assumption of a Poisson distribution, a random sample of 150 ten-minute intervals was taken.You are given the following observed frequencies: Number of Cars Arriving Frequency in a 10-Minute Interval 0 3 1 10 2 15 3 23 4 30 5 24 6 20 7 13 8 8 9 or more 4 150 Calculate mean and use Poisson probabilities.The expected frequency of exactly 3 cars arriving in a 10-minute interval is

(Multiple Choice)

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(96)

Question 33

The following table shows the number of individuals in a sample of 300 who indicated they support the new tax proposal. Political Party Support Democrats 100 Republicans 120 Independents 80 We are interested in determining whether or not the opinions of the individuals of the three groups are uniformly distributed.The number of degrees of freedom associated with this problem is

(Multiple Choice)

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Question 34

If there are three or more populations, then it is

(Multiple Choice)

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Question 35

In the past, 35% of the students at ABC University were in the Business College, 35% of the students were in the Liberal Arts College, and 30% of the students were in the Education College.To see whether or not the proportions have changed, a sample of 300 students from the university was taken.Ninety of the sample students are in the Business College, 120 are in the Liberal Arts College, and 90 are in the Education College.The calculated value for the test statistic equals

(Multiple Choice)

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Question 36

The degrees of freedom for a data table with 12 rows and 12 columns is

(Multiple Choice)

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Question 37

The following table shows the number of individuals in a sample of 300 who indicated they support the new tax proposal. Political Party Support Democrats 100 Republicans 120 Independents 80 We are interested in determining whether or not the opinions of the individuals of the three groups are uniformly distributed.The expected frequency for each group is

(Multiple Choice)

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Question 38

An important application of the chi-square distribution is

(Multiple Choice)

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Question 39

The following table shows the number of individuals in a sample of 300 who indicated they support the new tax proposal. Political Party Support Democrats 100 Republicans 120 Independents 80 We are interested in determining whether or not the opinions of the individuals of the three groups are uniformly distributed.The calculated value for the test statistic equals

(Multiple Choice)

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(90)

Question 40

The test for goodness of fit, test of independence, and test of multiple proportions are designed for use with

The number of degrees of freedom associated with the chi-square distribution in a test of independence is

The properties of a multinomial experiment include all of the following except

If there are three or more populations, then it is

The degrees of freedom for a data table with 12 rows and 12 columns is

An important application of the chi-square distribution is

Data and Statistics

Descriptive Statistics: Tabulargraphical

Descriptive Statistics: Numerical

Introduction to Probability

Discrete Probability Distributions

Continuous Probability Distributions

Sampling and Sampling Distributions

Interval Estimation

Hypothesis Tests

Inference About Means and Proportions With Two Populations

Inferences About Population Variances

Experimental Design and Analysis of Variance

Simple Linear Regression

Multiple Regression

Filters

Exam 12: Comparing Multiple Proportions, Test of Independence and Goodness of Fit

The test for goodness of fit, test of independence, and test of multiple proportions are designed for use with​

The number of degrees of freedom associated with the chi-square distribution in a test of independence is

The properties of a multinomial experiment include all of the following except​

If there are three or more populations, then it is

The degrees of freedom for a data table with 12 rows and 12 columns is

An important application of the chi-square distribution is

Data and Statistics

Descriptive Statistics: Tabulargraphical

Descriptive Statistics: Numerical

Introduction to Probability

Discrete Probability Distributions

Continuous Probability Distributions

Sampling and Sampling Distributions

Interval Estimation

Hypothesis Tests

Inference About Means and Proportions With Two Populations

Inferences About Population Variances

Experimental Design and Analysis of Variance

Simple Linear Regression

Multiple Regression

Filters

The test for goodness of fit, test of independence, and test of multiple proportions are designed for use with

The properties of a multinomial experiment include all of the following except