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Answer the following questions in one or two well-constructed sentences.
A. What happens to the standard error of the mean if the sample size is increased?
B. What happens to the distribution of the sample means if the sample size in increased?
C. When using the distribution of sample means to estimate the population mean, what is the benefit of using larger sample sizes?
A major benefit of two-way ANOVA over several one-way ANOVAs, If an F test for interaction is significant.
Determine the probability that their SAT scores will differ by more than 50 points?
Employees of a local university have been classified according to gender and job type. The following table provides data about the employees.
The margin of error for a 95% confidence interval estimate for the proportion of all students with cell phones is
Create a 99% confidence interval estimate of population mean amount of paint included in a 1 gallon can.
Determine whether the method of delivering teaching influences adherence with antiretroviral therapy.
Ninety of the sample students are in the Business College, 120 are in the Liberal Arts College, and 90 are in the Education College.
Does this result support original claim, or is population percentage considerably less than 45%. Use alpha=.05 for level of significance.
Construct the 90% and 95% interval estimates for the population mean weekly sales.
Do you benefit by using a cum sum chart rather than a control chart?
A radio station wants to know if residents in their area are in favor of a proposed tax increase. They invite listeners to call in to respond to the poll. 645 of the 800 who responded were against the tax.
Do these data suggest a statistically significance difference between the proportions of drug-resistant cases in the two states? Use a 0.02 level of significance and computed value of 2.37.
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