Essentials of Statistics for the Behavioral Sciences
8th Edition
ISBN: 9781133956570
Author: Frederick J Gravetter, Larry B. Wallnau
Publisher: Cengage Learning
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Chapter 2.2, Problem 1LCA
To determine
To Find: The grouped frequency distribution on scores data.
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Chapter 2 Solutions
Essentials of Statistics for the Behavioral Sciences
Ch. 2.2 - Construct a frequency distribution table for the...Ch. 2.2 - Find each of the following values for the sample...Ch. 2.2 - Prob. 1LCACh. 2.2 - Prob. 2LCACh. 2.2 - Prob. 3LCACh. 2.4 - Sketch a histogram and a polygon showing the...Ch. 2.4 - Describe the shape of the distribution in Exercise...Ch. 2.4 - Prob. 3LCCh. 2.4 - If the results from a research study are presented...Ch. 2.4 - Prob. 5LC
Ch. 2 - Place the following set of n = 20 scores in a...Ch. 2 - Construct a frequency distribution table for the...Ch. 2 - Find each value requested for the distribution of...Ch. 2 - Find each value requested for the distribution of...Ch. 2 - For the following scores, the smallest value is X...Ch. 2 - The following scores are the ages for a random...Ch. 2 - For each of the following samples, determine the...Ch. 2 - What information is available about the scores in...Ch. 2 - Describe the difference in appearance between a...Ch. 2 - For the following set of scores: 8 5 9 6 8 7 4 10...Ch. 2 - Sketch a histogram and a polygon showing the...Ch. 2 - Sketch a histogram showing the distribution of...Ch. 2 - A survey given to a sample of college students...Ch. 2 - Each year the college gives away T shirts to new...Ch. 2 - Gaucher, Friesen, and Kay (2011) found that words...Ch. 2 - Find each or the followin.tt values for the...Ch. 2 - Prob. 17PCh. 2 - Place the following scores in a frequency...Ch. 2 - For the following set of scores: 8 6 7 5 4 10 8 9...Ch. 2 - Fowler and Christakis (2008) report that personal...Ch. 2 - Recent research suggests that the amount of lime...
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- One state's annual rainfall has a normal dis- tribution with a mean of 100 inches and standard deviation of 25 inches. Suppose that corn grows best when the annual rainfall is between 100 and 150 inches. What's the chance of achieving this amount of rainfall? wved now of sociarrow_forward13 Suppose that your exam score has a standard score of 0.90. Does this mean that 90 percent of the other exam scores are lower than yours?arrow_forwardBob's commuting times to work have a nor- mal distribution with a mean of 45 minutes and standard deviation of 10 minutes. How often does Bob get to work in 30 to 45 minutes?arrow_forward
- Bob's commuting times to work have a nor- mal distribution with a mean of 45 minutes and standard deviation of 10 minutes. a. What percentage of the time does Bob get to work in 30 minutes or less? b. Bob's workday starts at 9 a.m. If he leaves at 8 a.m., how often is he late?arrow_forwardSuppose that you want to put fat Fido on a weight-loss program. Before the program, his weight had a standard score of +2 com- pared to dogs of his breed/age, and after the program, his weight has a standard score of -2. His weight before the program was 150 pounds, and the standard deviation for the breed is 5 pounds. a. What's the mean weight for Fido's breed/ age? b. What's his weight after the weight-loss program?arrow_forwardWeights have a normal distribution with a mean of 100 and standard deviation of 10. What weight has 60 percent of the values lying below it?arrow_forward
- The times it takes to complete a statistics exam have a normal distribution with a mean of 40 minutes and standard deviation of 6 minutes. Deshawn's time falls at the 42nd percentile. How long does Deshawn take to finish her exam? bad boy wod abbed a le signe ne tolgikiwo (ezonipuo brit of heen ugy shies von no rep on ud af vt to into Or festes e a (92) 00arrow_forwardJimmy walks a mile, and his previous times have a normal distribution with a mean of 8 minutes and standard deviation of 1 minute. What time does he have to make to get into his own top 10 percent of his fastest times?arrow_forwardEarrow_forward
- Statcars have a miles per gallon normal distribution with a mean of 75. Twenty percent of the vehicles get more than 100 miles per gallon. What's the standard deviation?arrow_forward6 Exam scores for a particular test have a normal distribution with a mean of 75 and standard deviation of 5. The instructor swants to give the top 20 percent of the scores an A. What's the cutoff for an A? dong lemon 2 ob of onlyarrow_forward42 68 (F) Round to the mean as needed Class Frequency, f Midpoint Relative frequency Cumulative frequency 17:27 18 22 0.05 18 28-38 42 ☐arrow_forward
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