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In a random sample of 75,555 men, 3448 held multiple jobs. In a random sample of 66,914 women, 3495 held multiple jobs.
Critical Thinking:
1. Construct a 90% confidence interval estimate of the difference between the proportion of men and the proportion of women who hold multiple jobs.
2. What does this confidence interval suggest?
3. Treat the results as simple random samples, and use a 0.02 level of significance to test the claim that the men and women have the same proportion of multiple jobs.
4. Using the results of the hypothesis test, what valid conclusion can be made from the sample results? Based on the sample results, can we conclude anything about the whole population?
The mean arrival rate is 15 cars per hour. What is the probability that 20 or more cars will arrive during any given hour of operation?
Ask them if they would be comfortable with a woman asking them out for a date. If the claim made by the study was true, what is the probability that: At most 4 men would say no?
In a survey of adults, 68% thought that DNA test for identifying an individual were very reliable. You randomly select 24 adults and ask each if he or she thinks DNA test for identifying an individual are very reliable.
Construct a 95% confidence interval for the proportion of all those who experience some type of discomfort.
The Queen Mary sails between England and the U.S. Stowaways are sometimes found on board. The ages (years) of stowaways from eastbound and westbound crossings are given below. Eastbound: 24, 24, 34, 15, 19, 22, 18, 20, 20, 17 Westbound: 41, 24, 32..
Identify and analyze a research question that applies to your organization. Prepare a 350- to 700-word milestone. Choose an organization with which your team is familiar.
How do you solve the inequality (x + 1)(x - 6)
Five percent of the respondents gave $25,000 or more to charity over the previous year. Develop a 95% confidence interval for the proportion who gave $25,000 or more to charity.
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