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A poll was conducted that asked 1015 people how many books they had read in the past year. x=13.3 books and s=16.6 books construct a 90% confidence interval for the mean number of books people read.
A baseball player hits 59 home runs during a season with 161 games. What is the empirical probability that the player would hit at least one home run during any given game of the season?
what proportion of the data from a normal distribution is two standard deviations from the mean?1. 0.47722. 0.34133.
Random sample of 40 November days (taken over many years)? Carry your intermediate computations to at least four decimal places. Round your answer to at least three decimal places.
martindate were tester which can compare two materials in sigle run, weights losses from seven runs. Examine these data by creating the 90% confidence interval for difference of means. Define your assumption.
Assume that the underlying population variances are equal. a. Are the two samples paired or independent?
Assuming that the data is normally distributed and the sample size is greater than 30, calculate the critical values for a two tailed and a one-tailed test when alpha = 0.05
You want to determine whether or not an observational coding system you've created for ADHD is better as a system with 5 behavioral scales or 3 behavioral scales. What test should be run?
Private university loan default rate is below the rate for all universities, using a left-tailed test at s=.01? Calculate the p-value. Verfify the assumption of normality is justified
find the sampling distribution and pdfs of ysub1 and ysubn for random samples of size n from a continous uniform
Give an example of when the F-statistic would be a useful value in data analysis. Provide details of what you would measure and how the F-statistic would be used.
Assuming that the heights of college women are normally distributed, with a mean of 69 inches and standard deviation of 4.8 in, what is the percentage of women that are between 69 in. and 73.8 in.?
A large industrial firm uses 3 local motels to provide overnight accommodations for its clients. From past experience it is known that 20%: of the clients are assigned rooms at the Ramada Inn, 50% at the Sheraton, and 30% at the Lake view Motor Lodge..
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