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One-Sample Hypothesis Test Confidence Intervals
Take a random sample and perform a t-test against a population mean (no time series for any parts of this project.) Test a hypothesis about a population mean. Besides the instructions above, explain what assumptions you made. Note: n must be between 15 to 20! Use no other sample sizes.
Use the same data as 1a and develop a 90% confidence interval and a 95% confidence interval for the population mean. Contrast this to 1a. What additional information or insight did this provide you over the traditional hypothesis testing.
A company will promote two employees out of a group of six men and three women, what would you say the chances of this experiment if there is particular concern about gender equity and which concept of probability would you use to estimate these p..
In a sample of 855 bartenders, 48% heard complaints from persons about work. If the margin of error was 4.4%, what was the confidence level that was used?
Produce a printout of the frequency tables, showing the total of both frequencies.
The average hourly wage of employees of a certain company is $9.83. Assume the variable is normally distributed.
Describe a psychological research situation or scenario that would use a nonparametric test. Why would the nonparametric test be used?
If there is a negative dependent variable of -0.55, and independent variables Y1 of +0.75 and Y2 of -3.0, how do I interpret the relationships according to the signs?
Determine 95% confidence interval evaluate for average number of years served by all Supreme Court justices?
If Stephenson wishes to maximize its total market value, would you recommend that it issue debt or equity to finance the land purchase? Explain.
Describe the data for a correlational research study. Explain how correlational research is different from other research evaluating the relationship between two variables.
A county has four major hospitals: 1) Regional Memorial; 2) General; 3) Charity; and 4) City. A multiple regression model is used to compare the time spent in the hospital after a heart by-pass surgery among the four hospitals.
Can you please give one example of a Qualitative data and one example of a Quantitative Data that you face daily? Please explain why it is a Quantitative or Qualitative data and describe the scale of measurement.
If a group is chosen from a population on the basis of sharing the same percentages of trait features as known to exist in the population, then the group so chosen would constitute:
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