Question 1

Heights of adult women are known to have a bell-shaped distribution. Draw a boxplot to illustrate the results.

Accepted Answer

Check students' drawings. Stud

Question 2

Find the population mean. Round to one decimal place as needed. 
$0,3,4,4,9$

Accepted Answer

A) 4 
B)  5.8 
C)  20 
D)  5 
A) 4 
B)  5.8 
C)  20 
D)  5

Question 3

Obtain the five-number summary for the given data.
-2, 4, 5, 7, 10, 11, 14

Accepted Answer

A) 2, 4.5, 7, 10.5, 14 
B) 2, 5, 5, 4, 14 
C) 2, 4, 7, 11, 14 
D) 2, 5, 7, 10, 14 
A) 2, 4.5, 7, 10.5, 14 
B) 2, 5, 5, 4, 14 
C) 2, 4, 7, 11, 14 
D) 2, 5, 7, 10, 14

Question 4

Find the median for the given sample data.
-10, 1, 28, 16, 49, 45, 35 1

Accepted Answer

A) 6 
B) 28 
C) 35 
D) 26 
A) 6 
B) 28 
C) 35 
D) 26

Question 5

Provide an appropriate response.
-Find the z-score corresponding to the given value and use the z-score to determine whether the value is unusual. Consider a score to be unusual if it is at least three standard deviations above or
Below the mean. Round the z-score to one decimal place, if necessary.
A body temperature of 95.8° F given that human body temperatures have a mean of 98.20° F and a
Standard deviation of 0.62°.

Accepted Answer

A) -2.4; not usual 
B) -3.9; not unusual 
C) 3.9; not unusual 
D) -3.9; unusual 
A) -2.4; not usual 
B) -3.9; not unusual 
C) 3.9; not unusual 
D) -3.9; unusual

Question 6

Fill in the blank. If both the sample standard deviation, s, and the population standard deviation, Ϭ, are computed for the same data set, they will tend to be closer together if the data set is ___________.

Accepted Answer

The answer of Fill in the blank. If both the...

Question 7

The table below provides a frequency distribution for the winner of the Davis Cup during the period 1977-1994.  $\begin{array}{l} \text { Winner of }\ \begin{array} { l c }  \text { Davis Cup } & \text { Frequency } \ \hline \text { United States } & 6 \ \text { Germany } & 3 \ \text { Czechoslovakia } & 1 \ \text { Australia } & 3 \ \text { France } & 1 \ \text { Sweden } & 4 \end{array} \end{array}$  
Which measure of center, the mean, the median, or the mode is most appropriate here? Why?

Accepted Answer

The mode. The data (winning co

Question 8

Find the mode(s)for the given sample data.
-The speeds (in mi/h)of the cars passing a certain checkpoint are measured by radar. The results are shown below. 
$\begin{array} { l l l l l } 42.9 & 42.4 & 40.6 & 42.1 & 41.8 \end{array}$
$\begin{array} { l l l l l } 41.8 & 42.4 & 42.8 & 44.2 & 42.1 \end{array}$
$\begin{array} { l l l l l } 42.9 & 42.8 & 42.1 & 42.5 & 42.4 \end{array}$
$\begin{array} { l l l l l } 43.3 & 43.3 & 40.6 & 44.0 & 42.9 \end{array}$

Accepted Answer

A) $42.47 \mathrm { mi } / \mathrm { hr }$ 
B)  $42.4 \mathrm { mi } / \mathrm { hr }$ 
C)  $42.9 \mathrm { mi } / \mathrm { hr } , 42.1 \mathrm { mi } / \mathrm { hr } , 42.4 \mathrm { mi } / \mathrm { hr }$ 
D)  $42.9 \mathrm { mi } / \mathrm { hr }$ 
A) $42.47 \mathrm { mi } / \mathrm { hr }$ 
B)  $42.4 \mathrm { mi } / \mathrm { hr }$ 
C)  $42.9 \mathrm { mi } / \mathrm { hr } , 42.1 \mathrm { mi } / \mathrm { hr } , 42.4 \mathrm { mi } / \mathrm { hr }$ 
D)  $42.9 \mathrm { mi } / \mathrm { hr }$

Question 9

Solve the problem. If necessary, round your answer to one more decimal place than that used for the observations.
-Let $x _ { 1 } = 12 , x _ { 2 } = 17 , x _ { 3 } = 5 , x _ { 4 } = 1$, and $x _ { 5 } = 7$. Determine $\bar { x }$.

Accepted Answer

A) $8.4$ 
B)  $10.5$ 
C)  42 
D)  5 
A) $8.4$ 
B)  $10.5$ 
C)  42 
D)  5

Question 10

A company advertises an average of 42,000 miles for one of its new tires. In the manufacturing process there is some variation around that average. Would the company want a process that provides a large or a small variance? Justify your answer.

Accepted Answer

A small standard deviation wou

Question 11

Find the range for the given data set. 6, 18, 1, 14, 10

Accepted Answer

A) 4 
B) 17 
C) 18 
D) 1 
A) 4 
B) 17 
C) 18 
D) 1

Question 12

A sample of 56 books has a mean cost of $91.14 and a standard deviation of $9.02. Use this information and the special cases of Chebychev's rule to complete the statements below: 
(i) At least 42 of the 56 books cost between ____and____
(ii) At least ______of the 56 books cost between $\$ 64.08$ and $\$ 118.20$.

Accepted Answer

A) (i) $\$ 68.59 , \$ 113.69$
(ii) $46$ 
B)  (i) $\$ 82.12 , \$ 100.16$
(ii) $50$ 
C)  (i) $\$ 73.10 , \$ 109.18$
(ii) $50$ 
D)  (i) $\$ 64.08 , \$ 118.20$
(ii) $43$ 
A) (i) $\$ 68.59 , \$ 113.69$
(ii) $46$ 
B)  (i) $\$ 82.12 , \$ 100.16$
(ii) $50$ 
C)  (i) $\$ 73.10 , \$ 109.18$
(ii) $50$ 
D)  (i) $\$ 64.08 , \$ 118.20$
(ii) $43$

Question 13

Solve the problem. If necessary, round your answer to one more decimal place than that used for the observations.
-A scientist used the following data set showing the weight in pounds gained (or lost) by a sample of eight laboratory animals given Drug $X$. Determine $n , \sum x _ { i }$, and $\bar { x }$.

Accepted Answer

A) 
$\begin{array} { r r r r } 8.9 & - 7.5 & 2.1 & 3.0 \ - 2.9 & 2.4 & 5.7 & - 5.4 \end{array}$  $\mathrm { n } = 8$;
$\begin{array}{l}
\sum \mathrm{x}_{i}=6.3 \
\overline{\mathrm{x}}=0.79
\end{array}$ 
B)  $\mathrm { n } = 10$;
$\begin{array}{l}
\sum \mathrm{x}_{i}=6.3 \
\overline{\mathrm{x}}=0.79
\end{array}$ 
C)  $\mathrm { n } = 10$;
$\begin{array}{l}
\sum \mathrm{x}_{i}=6.3 \
\overline{\mathrm{x}}=0.79
\end{array}$. 
D)  $\mathrm { n } = 8$;
$\begin{array}{l}
\sum \mathrm{x}_{i}=6.3 \
\overline{\mathrm{x}}=0.79
\end{array}$. 
A) 
$\begin{array} { r r r r } 8.9 & - 7.5 & 2.1 & 3.0 \ - 2.9 & 2.4 & 5.7 & - 5.4 \end{array}$  $\mathrm { n } = 8$;
$\begin{array}{l}
\sum \mathrm{x}_{i}=6.3 \
\overline{\mathrm{x}}=0.79
\end{array}$ 
B)  $\mathrm { n } = 10$;
$\begin{array}{l}
\sum \mathrm{x}_{i}=6.3 \
\overline{\mathrm{x}}=0.79
\end{array}$ 
C)  $\mathrm { n } = 10$;
$\begin{array}{l}
\sum \mathrm{x}_{i}=6.3 \
\overline{\mathrm{x}}=0.79
\end{array}$. 
D)  $\mathrm { n } = 8$;
$\begin{array}{l}
\sum \mathrm{x}_{i}=6.3 \
\overline{\mathrm{x}}=0.79
\end{array}$.

Question 14

Find the mode(s)for the given sample data.
-76, 25, 76, 13, 25, 29, 56, 76

Accepted Answer

A) 47 
B) 42.5 
C) 25 
D) 76 
A) 47 
B) 42.5 
C) 25 
D) 76

Question 15

Find the mean for the given sample data. Unless otherwise specified, round your answer to one more decimal place thanthat used for the observations.
-17, 10, 6, 14, 6, 1, 8

Accepted Answer

A) 10.3 
B) 8.4 
C) 10.4 
D) 8.9 
A) 10.3 
B) 8.4 
C) 10.4 
D) 8.9

Heights of adult women are known to have a bell-shaped distribution. Draw a boxplot to illustrate the results.

Find the population mean. Round to one decimal place as needed. $0,3,4,4,9$

Obtain the five-number summary for the given data. -2, 4, 5, 7, 10, 11, 14

Find the median for the given sample data. -10, 1, 28, 16, 49, 45, 35 1

Fill in the blank. If both the sample standard deviation, s, and the population standard deviation, Ϭ, are computed for the same data set, they will tend to be closer together if the data set is ___________.

Find the mode(s)for the given sample data. -The speeds (in mi/h)of the cars passing a certain checkpoint are measured by radar. The results are shown below. 42.9 42.4 40.6 42.1 41.8 41.8 42.4 42.8 44.2 42.1 42.9 42.8 42.1 42.5 42.4 43.3 43.3 40.6 44.0 42.9

Solve the problem. If necessary, round your answer to one more decimal place than that used for the observations. -Let $x _ { 1 } = 12 , x _ { 2 } = 17 , x _ { 3 } = 5 , x _ { 4 } = 1$ , and $x _ { 5 } = 7$ . Determine $\bar { x }$ .

A company advertises an average of 42,000 miles for one of its new tires. In the manufacturing process there is some variation around that average. Would the company want a process that provides a large or a small variance? Justify your answer.

Find the range for the given data set. 6, 18, 1, 14, 10

Find the mode(s)for the given sample data. -76, 25, 76, 13, 25, 29, 56, 76

Find the mean for the given sample data. Unless otherwise specified, round your answer to one more decimal place thanthat used for the observations. -17, 10, 6, 14, 6, 1, 8

The Nature of Statistics

Organizing Data

Probability Concepts

Discrete Random Variables

The Normal Distribution

The Sampling Distribution of the Sample Mean

Confidence Intervals for One Population Mean

Hypothesis Tests for One Population Mean

Inferences for Two Population Means

Inferences for Population Standard Deviations

Inferences for Population Proportions

Chi-Square Procedures

Descriptive Methods in Regression and Correlation

Inferential Methods in Regression and Correlation

Analysis of Variance Anova

Filters

Exam 3: Descriptive Measures

Heights of adult women are known to have a bell-shaped distribution. Draw a boxplot to illustrate the results.

Find the population mean. Round to one decimal place as needed. 0,3,4,4,90,3,4,4,90,3,4,4,9

Obtain the five-number summary for the given data. -2, 4, 5, 7, 10, 11, 14

Find the median for the given sample data. -10, 1, 28, 16, 49, 45, 35 1

Fill in the blank. If both the sample standard deviation, s, and the population standard deviation, Ϭ, are computed for the same data set, they will tend to be closer together if the data set is ___________.

Find the mode(s)for the given sample data. -The speeds (in mi/h)of the cars passing a certain checkpoint are measured by radar. The results are shown below. 42.9 42.4 40.6 42.1 41.8 41.8 42.4 42.8 44.2 42.1 42.9 42.8 42.1 42.5 42.4 43.3 43.3 40.6 44.0 42.9

Solve the problem. If necessary, round your answer to one more decimal place than that used for the observations. -Let x1=12,x2=17,x3=5,x4=1x _ { 1 } = 12 , x _ { 2 } = 17 , x _ { 3 } = 5 , x _ { 4 } = 1x1​=12,x2​=17,x3​=5,x4​=1 , and x5=7x _ { 5 } = 7x5​=7 . Determine xˉ\bar { x }xˉ .

A company advertises an average of 42,000 miles for one of its new tires. In the manufacturing process there is some variation around that average. Would the company want a process that provides a large or a small variance? Justify your answer.

Find the range for the given data set. 6, 18, 1, 14, 10

Find the mode(s)for the given sample data. -76, 25, 76, 13, 25, 29, 56, 76

Find the mean for the given sample data. Unless otherwise specified, round your answer to one more decimal place thanthat used for the observations. -17, 10, 6, 14, 6, 1, 8

The Nature of Statistics

Organizing Data

Probability Concepts

Discrete Random Variables

The Normal Distribution

The Sampling Distribution of the Sample Mean

Confidence Intervals for One Population Mean

Hypothesis Tests for One Population Mean

Inferences for Two Population Means

Inferences for Population Standard Deviations

Inferences for Population Proportions

Chi-Square Procedures

Descriptive Methods in Regression and Correlation

Inferential Methods in Regression and Correlation

Analysis of Variance Anova

Filters

Find the population mean. Round to one decimal place as needed. $0,3,4,4,9$

Solve the problem. If necessary, round your answer to one more decimal place than that used for the observations. -Let $x _ { 1 } = 12 , x _ { 2 } = 17 , x _ { 3 } = 5 , x _ { 4 } = 1$ , and $x _ { 5 } = 7$ . Determine $\bar { x }$ .