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Does marriage hinder the career progression of women to a greater degree than that of men? According to The Journal of Applied Psychology, in a random sample of 795 male managers and 223 female managers from 20 Fortune 500 corporations, 86% of the male managers and 45% of the female managers were married.
-Use a 95% CI to estimate the difference between the proportions of men and women managers who are married.
-Interpret the interval and what is the conclusion in terms of the populations from which the samples were drawn.
If random sample of size n = 16 are selected, can we say anything about the xbar distribution of sample means?
Research shows that the life time of Everlast automobile tires is normally distributed with a mean value of 70,000 miles and a standard deviation of 7,000 miles. What is the probability of having a tire that lasts more than 80,000 miles?
Develop a decision tree for the case of a company operating at full capacity and with product demand rising. The choice is between new equipment and overtime.
Assume a random sample of 16 gasoline stations is selected and their mean cost for regular gasoline is computed. What is the standard error of the mean in this experiment?
What would be the critical value under the null hypothesis if the size of your test were 5%?
A box in a certain supply room contains four 40 w light bulbs, five 60-W bulbs, and six 75-W bulbs. If two are randomly selected from the box and at least one of them is found to be rated 75-W.what is the probability that both of them are 40- W bu..
If the sample standard deviation is s = 10, are the data sufficient to conclude that the treatment has significant effect using a two-tailed test with α = .05?
Find the mean and standard deviation for the population and population of exam scores
A high school counselor is interested in the percentage of students who will be going to college. She randomly picks 60 students and finds that 53 will be going to college. Use a 95% confidence level to find the population proportion.
Twelve doctor's offices were given 3 lab inspections with the following results:
To test is there any significant difference among two proportions. The Damon family owns a large grape vineyard in western New York along Lake Erie.
As reported by Runner's World magazine, the times of the finishers in the New York City 10-km run are normally distributed with a mean of 61 minutes and a standard deviation of 9 minutes. Let x be the finishing time for a finisher in the New York ..
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