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A study is run comparing HDL cholesterol levels between men who exercise regularly and those who do not. The data are shown below. The pooled standard deviation is 12.04.
Researchers believe there is a difference between men who exercise and those who do not. What is the appropriate critical value to run a hypothesis test at the alpha level=0.05?
create a time plot from the treasury bill returns data. here again just use the data. you need not answer the book
Ffind the mean, variance and standard deviation of binomial distribution? what valuses of the random variable X would you consider unusual?
What is the probability that all 3 would iPods from best buy? Or at least one would have iPod from best buy?
a researcher wishes to conduct a study on the self-esteem levels of adolescents. she believes that male adolescents
What percentage of men are too tall to fit through a standard doorway without bending, and what percentage of women are too tall to fit?
given a sample size of 34 with sample mean 660.3 and sample standard deviation 104.9 we perform the following
conduct a one-tailed hypothesis test given the information below.a manufacturer wants to increase the shelf life of a
assess the use of qualitative data to support business decision making. consider different tyoes of qualitative data
Infers that less than 60% of the items are sold within 1 week. Find the probability of the type I error, then state your conclusion in words of the problem at a level of significance of 0.07.
A film alliance used a random sample of 50 U.S. citizens to estimate that the typical American spent 78 hours watching videos and DVDs last year. The standard deviation of this sample was 9 hours.
given the situation described identify the type of sampling involved. a local library polls every 9th customer about
michael and kevin return to the candy store but this time they want to purchase nuts. they cant decide among peanuts
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