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Question: A community health association is interested in estimating the average number of maternity days women stay in the local hospital. A random sample is taken of 36 women who had babies in the hospital during the past year. The following numbers of maternity days each woman was in the hospital are rounded to the nearest day.
2 3 4 3 2 5 3 1 4 3
4 2 3 5 3 2 4 3 2 2
1 6 3 4 3 3 5 2 3 1
3 5 4 3 5 2
Use these data and a population standard deviation of 1.16 to construct a 98% confidence interval to estimate the average maternity stay in the hospital for all women who have babies in this hospital.
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For this assignment, you will examine the use of qualitative data for a business scenario.
Assume that σ = .8 and the difference in means they wish to detect is .25. If they want to do a two-sided test of equal population means with a = .05 and β = .20, what sample size should they use?
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What is the probability that a randomly selected child in 2004 lived in poverty? Is whether a child lives in poverty or not independent of whether (s)he lives in a single-parent or married-couple home?
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Calculate correlation coefficient for data below. Compute the equation for regression line if n=7, Ex=69, Ey=528 Exy=4754 and Ex^2=825
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