Question 1

Under the normal curve, the probability of a score occurring below the mean is

Accepted Answer

A)  .68 
B)  .50 
C)  2 to 1 
D)  .68% 
A)  .68 
B)  .50 
C)  2 to 1 
D)  .68%

Question 2

Suppose you had flipped a fair coin 19 times and "tails" had come up each time. The probability of now tossing a "head" on the 20th flip would then be

Accepted Answer

A)  .50 
B)  .05 
C)  .95 
D)  .99 
A)  .50 
B)  .05 
C)  .95 
D)  .99

Question 3

When combining probabilities, to find the probability of one event AND another event, the separate probabilities should be

Accepted Answer

A)  multiplied 
B)  divided 
C)  subtracted 
D)  added 
A)  multiplied 
B)  divided 
C)  subtracted 
D)  added

Question 4

When the frequency of an event is 95%, its probability is

Accepted Answer

A)  .95 
B)  .05 
C)  .50 
D)  Cannot be found from the information given 
A)  .95 
B)  .05 
C)  .50 
D)  Cannot be found from the information given

Question 5

When an event must occur, its probability is 100.

Accepted Answer

A) True 
 B)False

Question 6

With a mean of 60 and an SD of 4, what is the probability of selecting at random a score between 56 and 58?

Accepted Answer

The answer of With a mean of 60 and an...

Question 7

The so-called "Gambler's Fallacy" makes the mistake of not recognizing

Accepted Answer

A)  the low-probability events 
B)  the high-probability events 
C)  the independent-events situation 
D)  that losses occur more frequently than wins 
A)  the low-probability events 
B)  the high-probability events 
C)  the independent-events situation 
D)  that losses occur more frequently than wins

Question 8

A certain air-force missile has an average range of 1500 miles with a standard deviation of 62 miles. What is the probability that any single shot will travel 1400 miles or less?

Accepted Answer

The answer of A certain air-force missile has an average...

Question 9

Probability is defined as

Accepted Answer

A)  the number of total events over the number of chances 
B)  the chances an event cannot occur over the chances it can 
C)  the number of times a specific event will occur over thee total number of events 
D)  the total number of events over the number of times a specific event will 
A)  the number of total events over the number of chances 
B)  the chances an event cannot occur over the chances it can 
C)  the number of times a specific event will occur over thee total number of events 
D)  the total number of events over the number of times a specific event will

Question 10

When the frequency of an event is 25%, its probability is

Accepted Answer

A)  3 to 1 
B)  .25 
C)  .75 
D)  none of these 
A)  3 to 1 
B)  .25 
C)  .75 
D)  none of these

Question 11

Under the normal curve, the probability of any single score falling below the mean is

Accepted Answer

A)  0 
B)  .16 
C)  .34 
D)  .50 
A)  0 
B)  .16 
C)  .34 
D)  .50

Question 12

No probability value can ever be greater than 1.00.

Accepted Answer

A) True 
 B)False

Question 13

The ratio, specific event divided by total events, defines probability.

Accepted Answer

A) True 
 B)False

Question 14

If the odds against an event are 19 to 1, the probability of its occurrence is

Accepted Answer

A)  .17 
B)  .05 
C)  .01 
D)  .25 
A)  .17 
B)  .05 
C)  .01 
D)  .25

Question 15

Under the normal curve, the probability of any single score being between z scores of + 3.00, is

Accepted Answer

A)  1.00 
B)  -1.00 
C)  .99 
D)  .50 
A)  1.00 
B)  -1.00 
C)  .99 
D)  .50

Question 16

In a certain house of correction, 64% percent of the current population of inmates had recidivated. What is the probability of selecting an inmate at random who had recidivated?

Accepted Answer

A)  .36 
B)  .64 
C)  .50 
D)  .46 
A)  .36 
B)  .64 
C)  .50 
D)  .46

Under the normal curve, the probability of a score occurring below the mean is

Suppose you had flipped a fair coin 19 times and "tails" had come up each time. The probability of now tossing a "head" on the 20th flip would then be

When combining probabilities, to find the probability of one event AND another event, the separate probabilities should be

When the frequency of an event is 95%, its probability is

When an event must occur, its probability is 100.

With a mean of 60 and an SD of 4, what is the probability of selecting at random a score between 56 and 58?

The so-called "Gambler's Fallacy" makes the mistake of not recognizing

A certain air-force missile has an average range of 1500 miles with a standard deviation of 62 miles. What is the probability that any single shot will travel 1400 miles or less?

Probability is defined as

When the frequency of an event is 25%, its probability is

Under the normal curve, the probability of any single score falling below the mean is

No probability value can ever be greater than 1.00.

The ratio, specific event divided by total events, defines probability.

If the odds against an event are 19 to 1, the probability of its occurrence is

Under the normal curve, the probability of any single score being between z scores of + 3.00, is

In a certain house of correction, 64% percent of the current population of inmates had recidivated. What is the probability of selecting an inmate at random who had recidivated?

Introduction to Statistics

Percentages, Graphs and Measures of Central Tendency

Measures of Variability

The Normal Curve and Z Score

Z Scores, T Scores and Other Normal Curve Transformations

Statistics and Parameters

Parameter Estimates

The Fundamentals of Research Methodology

The Hypothesis of Difference

The Hypothesis of Association: Correlation

Analysis of Variance

Nominal Categorical Data and the Chi Square

Regression Analysis

Repeated-Measures and Matched-Subjects Designs Interval Data

Non-Parametrics Revisited: the Ordinal Case

Tests and Measurements

Filters

Exam 6: Probability

Under the normal curve, the probability of a score occurring below the mean is

Suppose you had flipped a fair coin 19 times and "tails" had come up each time. The probability of now tossing a "head" on the 20th flip would then be

When combining probabilities, to find the probability of one event AND another event, the separate probabilities should be

When the frequency of an event is 95%, its probability is

When an event must occur, its probability is 100.

With a mean of 60 and an SD of 4, what is the probability of selecting at random a score between 56 and 58?

The so-called "Gambler's Fallacy" makes the mistake of not recognizing

A certain air-force missile has an average range of 1500 miles with a standard deviation of 62 miles. What is the probability that any single shot will travel 1400 miles or less?

Probability is defined as

When the frequency of an event is 25%, its probability is

Under the normal curve, the probability of any single score falling below the mean is

No probability value can ever be greater than 1.00.

The ratio, specific event divided by total events, defines probability.

If the odds against an event are 19 to 1, the probability of its occurrence is

Under the normal curve, the probability of any single score being between z scores of + 3.00, is

In a certain house of correction, 64% percent of the current population of inmates had recidivated. What is the probability of selecting an inmate at random who had recidivated?

Introduction to Statistics

Percentages, Graphs and Measures of Central Tendency

Measures of Variability

The Normal Curve and Z Score

Z Scores, T Scores and Other Normal Curve Transformations

Statistics and Parameters

Parameter Estimates

The Fundamentals of Research Methodology

The Hypothesis of Difference

The Hypothesis of Association: Correlation

Analysis of Variance

Nominal Categorical Data and the Chi Square

Regression Analysis

Repeated-Measures and Matched-Subjects Designs Interval Data

Non-Parametrics Revisited: the Ordinal Case

Tests and Measurements

Filters