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How would you interpret the findings of a correlation study that reported a linear correlation coefficient of +0.3?
a. strong linear correlation
b.weak linear correlation
c. impossible, calculation error
d. no linear correlation
Determine the p-value, and at 95% confidence, test the hypotheses.
If the population mean was $1047 in the previous year, does the evidence suggest that expenditure this year has significantly changed?
Probability based on normal distribution. Suppose among X has a normal distribution, and find the indicated probability.
One advantage of the repeated measures ANOVA is that it eliminates "individual differences" as a source of variability. Explain why there are no individual differences in the numerator and in the denominator of the F ratio.
Formulate the hypotheses that can be used to test the validity of the brokerage firm executive's claim.
Country A and Country C spends about the same amount on average per person per year. Which has the greater spread?
Calculate a 95% confidence interval for the population mean, based on the sample 10, 12, 13, 14, 15, 16, and 49. Change the number from 49 to 16 and recalculate the confidence interval. Using results, explain the effect of an outlier or extreme ..
Find the best point estimate of the mean salary of all NCAA football coaches.
Calculate the sample mean and sample standard deviation.
Suppose 10 balls, numbered 1-10, are to be distributed randomly into 10 boxes. a) What is the probability all 10 balls are placed into one box? b) What is the probability that no boxes are empty?
Formulate the hypotheses to determine whether or not the lathe is in perfect adjustment.
A 95% confidence interval for µ is found to be 652 ± 21.56 = ($630.44, $673.56). Determine which of the following statements is true.
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