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A researcher reports an F-ratio with df 3, 36 from an independent-measures research study.
a. How many treatment conditions were compared in the study?
b. What was the total number of participants in the study?
Rachel's doctor suspects she is suffering from hypoglycaemia. The amount of glucose in the bloodstream varies and a person with hypoglycaemia has an average blood glucose level of less than 65 mg/dL.
Do men and women have different beliefs on the ideal number of children in a family? Based on the following GSS2008 Data and the obtained t statistics, what would you conclude?
The average cost of a one bedroom apartment in a town is $550 per month. What is the probability of randomly selecting a sample of 50 one bedroom apartments in this town and getting a sample mean of less then $530 if the population standard deviat..
Suppose that you are interested in determining the effectiveness of an intensive supervision program (ISP) for poor student performers. To examine its effectiveness, you keep track of 12 students entering an ISP for one year and tabulate the numbe..
The effectiveness of treating respiratory infections with herbal remedies was studied. "Days of fever" was used to measure effects. Among 356 children treated with herbal remedies, teh mean number of days with was 0.36,
Suppose the mean time that was observed for the sample last month was 4 hours 44 minutes (284 minutes). What is the probability of seeing a sample mean this high or higher?
Is the speed of solving the problem different for people who get such instructions compared to the speed for people who are given no special instructions?
The scores of the GRE exam are transformed so they have a mean of 500 and standard deviation of 100. The scores are known to be normally distributed. What is the percentage of students that score below 750?
Determine the percentage of samples of size 4 that will have the mean scores within 35 points of the population mean score of 280.
Use the histogram to determine how many points are out of control according to the upper control limit and lower control limit.
Find all similarity classes of 6x6 matrices over Q with minimal polynomial (x+2)^2(x-1) (it suffices to give all lists of invariant factors and write out some of their corresponding matrices).
Suppose that, for a t test, your computed value for t is +3.28. The critical value of t is +2.048. Explain what this means. Do you reject the null hypothesis or not?
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