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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.
For what value of t will the null hypothesis not be rejected?
A farmer in Iowa owns 45 acres of land. He is going to plant each acre with wheat or corn. Each acre planted with wheat yields $200 profit, requires 3 workers, and requires 2 tons of fertilizer; each with corn yields $300 profit, requires 2 worker..
Create a 99% confidence interval for mean overall duration of symptoms in population of individuals who used zinc lozenges.
To estimate the mean of the population from sample information, we need to calculate the standard deviation of the distribution of the sample means around the population mean.
A human factors psychologist studied three computer keyboard designs.
Findout probabilities utilizing standard normal distribution. If the debt is normally distributed with a standard deviation.
Prepare a power curve for this decision rule
Rank the funds by using this alternative measure of risk. Which, if any outperformed the market on the risk-adjusted basis.
The Wilcoxon signed rank statistic, The mean for the Wilcoxon signed rank test and The P-value for the Wilcoxon signed rank test
According to Central Limit Theorem, how big of sample is essential to be sure sampling distribution of sample means is normally distributed.
Use MegaStat's output for simple linear regression to determine the regression equation
Assume that increasing and decreasing allergic reactions are equally likely if the training has no effect. Use alpha = .05
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