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The following data are the number of calls 20 customer sustain reps took in one hour:
10, 10, 15, 18, 20, 21, 22, 24, 24, 25, 26, 26, 26, 28, 30, 31, 33, 38, 40, 42
Find out the:
b. Standard Variance
c. Standard Deviation
Statistics and Probability, Statistics
Assume that you want to construct a 95% confidence interval estimate of a population mean. Find an estimate of the sample size needed to obtain the specified margin of error for the 95% confidence interval. The sample st ...
A box contains 3 plain pencils and 5 pens. A second box contains 9 color pencils and 3 crayons. One item from each is chosen at random, what is the probability that a pen from the first box and a crayon from the second b ...
Assignment First problem: A test consists of 10 true/false questions. To pass the test a student must answer at least 6 questions correctly. If a student guesses on each question, what is the probability that the student ...
Two Population Means A tomato farmer with a very large farm of approximately 2200 acres had heard about a new type of rather expensive fertilizer which would supposedly significantly increase his production. The frugal f ...
Module Assignment The paired data below consists of test scores and hours of preparation for 5 randomly selected students. Use this data set to answer the questions below: x Hours of preparation 5 2 9 6 10 y ...
Discuss the beginnings of the Cold War. From the position of a Soviet ruler, how might you have viewed the situation following WWII? How did the Truman administration attempt to handle it? (Include as many of the followi ...
These are pretty similar: The population standard deviation of the number of people who shop online is 3.1. If you want to be 99% confident that the sample mean is within 2% of the population mean, how many people must b ...
One of the Behavioral Research Case Studies involved Agocha and Cooper's (1999) study of partner characteristics and intentions to practice safe sex. Below are the Pearson correlations between the likelihood that partici ...
1. What is an interaction? 2. How many interactions can be tested in a 2 x 2 design? In a 3 x 3 design? In a 2 x 2 x 3 design? 3. Why do researchers use expericorr designs?
Dan is at the bottom of Donna's preference list, and Donna is at the bottom of Dan's preference list. Is it possible that there is a stable matching that matches Dan to Donna? Justify your answer.
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