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A team of two people to be selected out of 5 men and 5 women. A random variable X is defined to be the number of men selected. Find the standard deviation. (hint: create a table and find the expected value, then create another table to find the variance and the standard deviation).
There were 20 students in the class. Develop an ANOVA table for the regression analysis of hours studied as a predictor of the grade earned on the first statistics exam.
Standard deviation 0.3 ton. What is the probability that a fully loaded truck of this model is (a) less than 6 tons, (b) more than 7 tons, (c) between 6 and 7 tons?
At least 14 units of B and no more than 20 units of A must be used. Each unit of A weighs 5 kg and each unit of B weighs 10 kg. How many units of each type of raw material requires?
Suppose that a random requisition is found to have been incorrectly entered. What is the probability that it was processed by data entry specialist 1? By data entry specialist 2? By data entry specialist 3?
Data on the financial behavior
Random samples of five were selected from each of three populations. The sum of squares total was 100. The sum of squares due to the treatments was 40.
Write a substantive interpretation of the following unstandardized regression equation based on a sample of 743 city residents, where Y is a 10-point scale measuring the number of professional sporting events.
A random sample of 25 injections resulted in a variance of 0.135 test if the apparatus has a greater variance than the desired one.
The probability is 90% that the sample percentage will be contained within what symmetrical limits of the population percentage?
customer's time is worth $1 per hour and should be accounted for in the model. If customers arrive at a Poisson rate of 10 per hour, then what is the average cost per hour if Mary is hired? if Alice is hired?
Name the inferential statistical test that would be used for the method of training and why?
A simple random sample of 50 items from a population with σ 6 resulted in a sample mean of 32.
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