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Gender and commercial preference. A study was designed to compare two energy drink commercials. Each participant was shown the commercials in random order and asked to select the better one. Commercial A was selected by 44 out of 100 women and 79 out of 140 men.
Give an estimate of the difference in gender proportions that favored Commercial A. Also construct a large-sample 95% confidence interval for this difference.
the following bootstrap output is for mileage of a random sample of 25 mustang cars.based on a 90 confidence interval
Is there evidence to reject the hypothesis that the apartments are equally distributed between 1-bedroom, 2-bedroom, and 3-bedroom apartments, at alpha = .05?
In order to save costs, a firm issued a guideline that fax transmissions of 10 pages or more should be sent by 2-day mail instead. Exceptions are allowed but they want the average to be 10 or below.
What is the probability that the first friend was born on a Friday?- What is the probability that both friends were born on a Friday?
Graph the inequality below on the number line. b>10
What are the differences between reference groups and referent systems?
Calculate the Regression for Abortion Restrictions and Church Attendance
Mark VI monorail used at Disney world has a height of 72 in. Height of men are normally distributed with a mean of 69.5 in. And a standard deviation of 2.4 in.
what does the p-value tell the business statistician especially in terms of the normal curve? if the p-value is smaller
a study of 35 browns gerbils showed that their average weight was 4.7 ounces. the standard deviation of the population
The error between the sample mean and the population mean for a sample of n = 16 is 5 points and the error between a sample men and population mean for a sample of n = 100 is 2 points. Explain the difference in the standard error for the two sampl..
Suppose that the null hypothesis is rejected and alternate hypothesis is accepted. Discuss the conclusion as a Type I error, a Type II error, or a correct decision, if in fact the defendant is innocent.
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