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It is reported that the average number of weeks an individual is unemployed is 17.5 weeks. Assume that for the population of all unemployed individuals the population mean length of unemployment is 17.5 weeks and that the population standard deviation is 4 weeks. Suppose you would like to select a sample of 100 unemployed individuals for a follow-up study. What is the probability that a simple random sample of 100 unemployed individuals will provide a sample mean within 1 week of the population mean?
A standard deviation of $1500. at the 0.01 level of significance, can it be concluded that state employees earn on average less than federal employees?
A coffee manufacturer is interested in whether the mean daily consumption of regular-coffee drinkers is less than that of decaffeinated-coffee drinkers.
1. A coin having probability p of coming up heads is continually ?ipped. Let Pj(n) denote the probability that a run of j successive heads occurs within the ?rst n ?ips.
of 1000 applicants for a mountain-climbing trip in the himalayas 450 get altitude sickness 622 are not in good enough
Conduct a study to examine this phenomenon with a sample size of n=14. What is the probability that 11 or less, or more than 14 children become sick?
What are the three uses of the Chi-Square test? What are the restrictions when using the z test for equal proportions?
suppose a random variable t has cdf ft and assume ft is continuous. what is the cdf of
a population has a mean of 2200 and a standard deviation of of 400. taking a random sample of size 100 from this
A company will promote two employees out of a group of six men and three women, what would you say the chances of this experiment if there is particular concern about gender equity and which concept of probability would you use to estimate these p..
What is the margin of error of the large-sample 99.9% confidence interval for the proportion of all Quebec adults who would allow doctor-assisted suicide?
The following table gives the scores obtained by the students in a midterm test (X) and the final (Y). We want to see how well the final score
The goal of this assignment is to describe the organizational structure of the Teamsters and to analyze how the structure is effective in serving the union members' needs.
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