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You hypothesize that, when both a man and a woman are in the front seat of a car, the man is more likely to be driving than the woman.The null hypothesis is that the man and the woman are driving equally often.
You decide to test the hypothesis by observing 20 cars with both a man and a woman in the front, and counting how many of those have a man driving.
Say that men are really driving 70% of the time. Using a one tailed test at ?= .05, how many men have to be driving in order for you to be able to reject the null hypothesis? (In other words, at least what number of cars must be driven by men for you to reject the null?)If men are really driving 70% of the time, using a one tailed test at ?= .05, what will your power be if you observe 20 cars? (give a numeric answer to at least 3 decimal places)
if a data set has an even number of observations the mediana. is the average value of the two middle itemsb. is the
An owner of a fast food restaurant reported to corporate headquarters that the average bill paid by his customers in the last quarter was $6.20 and that the standard deviation was $1.90.
Make a graph to visualize the problem and state, without doing the calculations, whether the p-value of the test
Test whether there is any change in IQ after the training program. (The absolute value of t for 4 degrees of freedom at 1% level for one-tailed and two tailed tests are 3.747 and 4.604 respectively.
The company will replace any printer that fails within 1 year after purchase. What percent of printers can be excpected to fail during the warranty period.
A bonding company want to insure a construction projects completion. If the project is cancelled due to the contractor's lack of performance
State the decision rule using the .01 significance level. Compute the value of chi-square. What is your decision regarding Ho?
what is a measure of dispersion of random variable values about the expected
A researcher has a series of Likert-scale items and a measure of frequency of absenteeism. He uses each of the Likert-scaled items in a separate bivariate correlation with absenteeism without testing for the assumptions of linear relationships. Is th..
1. determine if this is an example of a variable or a parameter 79.6 of americans own at least one vehicle.2. determine
We code middle-aged Americans as 1 and senior citizens as 0, the logistic regression model for senior citizens
part a. dependent t testfor this assignment we are interested in finding out whether participation in a creative
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