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Consider a population consisting of ve values: 1, 3, 3, 5, 7.
(a) Find the population mean.
(b) List all possible samples of size 2. Calculate the sample mean for each.
(c) What is the average of the sample means calculated in part (b)? How does it compare with the population mean calculated in part (a)?
For the sample of 32 lg us cities the correlation between the mean # of sq ft per office worker and the mean monthly rental rate in the central business district is the -.363 at the .05 significance level
Find a 95% confidence interval for the mean monthly rent for unfurnished one-bedroom apartments available for rent in this community.
You are testing the null hypothesis that there is no linear relationship between two variables, X and Y. From your sample of 20, you determine that SSR = 60 and SSE = 40. Compute the correlation coefficient by first computing r squared and assuming..
question the number of clients that go every hour to a bank agency is processed according the poisson distribution. we
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..
q1 a doctor wants to know if there is a relationship between a fathers weight and his first newborn sons weight.
Use the Internet to find a website that shows an example or application correlation or regression in the area of your interest or in your profession. Discuss how correlation or regression was used and summarize your finding.
A population is normally distributed with mean 42.7 and standard deviation 4.7. Find the following probability.
Create raw score predictions on criterion variable for persons with Z scores on predictor value of -2,-1,0,+1,+2.
q1. find the probabilities for the following discrete random variablesa. among a shipment of 5000 tires 1000 are
A sample of 35 different HR departments found that employees worked an average of 240.6 days a year. If the population standard deviation is 18.8 days
For three independent samples, each with n = 100, the respective sample proportions are 0.30, 0.35, and 0.25. Use the 0.05 level in testing whether the three population proportions could be the same.
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