Compute the pearson correlation
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Determine the sample size needed to reject Ho if the ratio is 3 times the hypothesized value of 2 variances, alpha = 0.05, beta = 0.10, R=3.
Prior to installing the new system, company analysts determined that the incoming calls to the system are Poisson distributed with a mean equal to two every 10 minute. If this incoming call distribution is what the analysts think it is, whats the
The mean commute time in the US seems to be increasing. The current mean is 25.1 minutes and suppose you know ? = 12. If you are testing at the 1% level of significance, Find the power to find an increase of 1.5 minutes for a sample of 200.
Compute the Pearson correlation. Do these data provide sufficient evidence for a real relationship in the population? Test at the .05 level, two tails.
The lengths (in minutes) of a random selection of popular children's animated films are listed below. Estimate the true mean length of all children's animate films with 95% confidence. Assume the variable is normally distributed.
Using past years' data, the population standard deviation can be assumed known as 0.30. What is the 95% confidence interval estimate of the mean undergraduate GPA for students admitted to the top graduate business schools (to 2 decimals)?
The second sample of 40 items were chosen and measured. This second sample had an average response of 132 with a sample variance of 16. What is the pooled standard deviation for this problem? (rounded to second place after the decimal)
What is the z score for the University of Evansville? Which school was more expensive to attend in 1995, relative to the cost of education in its own category?
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