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In a random sample of 400 Minnesota residents 330 have home internet access whereas in a random sample of 900 Wisconsin residents 820 have internet access at home. Find the 98% confident interval for the difference between the proportions of Minnesota and Wisconsin residents with home internet access. Give a verbal interpretation of the interval
Suppose 100 randomly selected customers were asked to rate a particular service they recently had on a scale of 0 to 10. The sample mean rating was found to be 7.3.
if the correlation between the two independent variables of a regression analysis is 0.11 and each independent variable
1. the time it takes to train a newly hired telephone sales representative is normally distributed with a mean of 136
a doctor wants to estimate the hdl cholesterol of all 20-to 29- year-old females. how many sunjects are needed to
The standard deviation of test scores on a certain achievement test is 11.4. A random sample of 100 scores on this test had a mean of 71.2. Based on this sample, find a 90% confidence interval for the true mean of all scores. Complete the below:
What is the mean of the sampling distribution? What is the standard deviation of the sampling distribution? What is the probability that the mean tuition and fees of the sample is greater than $20,000?
Determine pearsons correlation coefficient and comment on the value obtained. Obtain a regression equation representing the above data. Estimate the production batch size for a direct labour cost of R350-00.
answer each question with a minimum of 50 words per question1 describe a scenario where you believe a binomial
Using this information, calculate Blpha risk (probability of Type II error) if the true population mean really is 79.
imagine that a student takes a 20-item multiple choice exam. she didnt study so all of her answers are guesses. each
Relatively speaking, who performed better on the test, you, with an 86, or your friend? Why?
you are picking a bouquet of 20 flowers for your mother at random from a garden with 25 conflowers 35 daisies and 42
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