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In order to determine whether or not a driver's education course improves the scores on a driving exam, a sample of six students were given the exam before and after taking the course. The results are shown below:
Score ScoreStudent Before the Course After the Course
1 83 87
2 89 88
3 93 91
4 77 77
5 86 93
6 79 83
Use ? = 0.1 and test to see if taking the course actually increased scores on the driving exam (perform all six steps of hypothesis testing, including p-values).
In considering doing a logistic regression using the Enter method, it was suggested that I may want to consider doing a sequential LSR or stepwise logistic regression instead.
P-value to test hypotheses,
Linda would like to maintain a 90% service level. what safety stock level do you recommend for BX-5?
Critically discuss the difference between the standard deviation of the sampling distribution of the mean and the standard deviation of the sampling distribution of the median when we calculate the probability?
Assume that the significance level is a= 0.1. Use the given information to find the p-value and the critical value (s). With H1: p = with line through it 1/2 the test statistic is z= - 1.35
Visits to Web sites. What kinds of Web sites do males aged 18 to 34 visit most often? Pornographic sites take first place, but about 50 percent of male Internet users in this age group visit an auction site such as eBay at least once a month. Inte..
What is the characteristic function of N? What is the mean and variance of N? What is the pmf of N? What is the probability that N is an even number?
Assume that you go to the drive through window at Wendy's and place an order. Two friends of yours independently place orders at the drive through window at the same Wendy's.
Use frequency distribution to create a probability distribution, determine the (b) mean,(c) variance and (d) standard deviation of probability distribution and (e) interpret results in context of real life situation.
The heights of 40 randomly selected people and the heights of their mothers are recorded. Statdisk is used to run a linear correlation and regression analysis. The partial results are provided below:
Use these statistics to construct a 94% confidence interval for the mean monthly consumption for the population of all Ontario households.
A laboratory scale is known to have a standard deviation of = 0.001 gram in repeated weighings. Scale readings in repeated weighings are normally distributed, with mean equal to the true weight of the specimen.
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