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Q1) After reviewing literature on depression and childbirth Moe claims that third of women become less depressed, 3rd become more depressed, and third neither become more nor less depressed after delivering a child. Do appropriate statistical analysis on this hypothesis based on a random sample of 60 women found in excel file. Based on this sample, is Moe correct in his assertion? Write up formal commentary of results of your test.
Carry out the test for the variance of girls score is not significantly less than the given data.
Explain the terms parameter and statistics. Make sure the concepts of population and sample are included in the definitions.
Probability using normal distribution.Sampling distributions. Given a normal distribution with μ = 50 and standard deviation σ = 9, if a sample of n = 100 is selected.
Determine the probability of examining a sample mean weight from any 20 women chosen from this population that is less than S (your sample mean) by using population standard deviation?
Find out the operating characteristics for this system.
Is the gender distribution for theater goers significantly different from the distribution for the general college? Test at the .05 level of significance.
If the payoff from outcome A is twice the payoff from outcome B, then the ratio of these utilities will be.
Use the Empirical Rule to estimate the proportion of costs within two standard deviations of the mean. What are these limits?
What is the standard deviation of expected returns for Stock X? For Stock Y?
In optimal solution, determine minimum time needed to complete project?
They wish to conduct a survey of their students and find a simple random sample of 50 Freshmen, 40 Sophomores, 35 Juniors, and 30 Seniors.
At the .05 significance level, can we conclude that the guideline is still reasonable?
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