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Here is my test question: at a university in 1985, a proportion of .47 of sociology majors were women. You assess the gender composition of a random sample of 187 sociology majors at the same university today and discover 105 females. Test a hypothesis to see if this proportion has changed since 1985. I have the t-score of 1.660 an a standard error of .036. I hope they are correct, but also need the test effect and test statistic, p-value.
Give a real world example of a situation where normal parametric tests would not be useful and where there is a need for nonparametric test methods. Be specific and explain why nonparametric tests are needed in that case.
N=120, population standard deviation is (known) 5, alpha =.05, standard error of the mean (sigma of xbar)= .46, h0 is rejected if xbar
When we carry out a goodness of fit chi-square test, the expected frequencies are based on the alternative hypothesis
Research the topic of Job Satisfaction using the Business Source Premier Database (EBSCO) and/or the ABI Inform Global database from the Internet.
A company makes molded plastic toys. They study the plastic injection process into the molds. A common cause of variation and What are the control limits for an chart
Draw a scatter diagram and consider the correlation for the provided data. Do larger universities tend to have more property crime.
Consider the following data for two independent random samples taken from two normal populations. What is the 90% confidence interval estimate of the difference between the two population means?
There is no significant difference in the mean household incomes between the two neighborhoods +0.05
Set up null hypothesis for associated F test.
Election officials take a random sample of 100 signatures and thoroughly investigate them to find that 84% are valid. Is this statistically significant evidence that the candidate has enough valid signatures overall? Explain.
Describe the shape of the distribution? what proportion of the players had no hits? how many players had 4 or fewer hits? what percentage of the players had one or fewer hits?
What are the odds against drawing a card from an ordinary deck of cards and getting a spade?
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