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A clinical trial tests a method designed to increase theprobability of conceiving a girl. In the study 516 babies wereborn, and 258 of them were girls.
Use the sample data to construct a 99% confidence interval estimate of the percentage of girls born.
Iif the sample consits of 16 scores, is the sample mean sufficient to conclude that the treatment has a significant effect? use a two tailed test with .05.
In a survey of 100 viewers, 36% indicated that they watch the late evening news on this local CBS station. What is your decision if α = 0.01?
If one item is chosen at random, what is the probability that it is less than 9.1 inches long? what is the probability that exactly 46 will grow into a healthy plant?
10 cartons are taken at random from an automatic filling machine.The mean net weight of the carton is11.8 kg and standard deviation of 0.15kg. Does the sample mean differ significantly from the intended weight of 12kgs?
Assume independent events. Why might the assumption of independence be violated? (b) Why might a driver be tempted not to use a seat belt "just on this trip"?
If the sales are $150,000 per month, determine how much the company can expect to receive of this amount.
suppose that we are testing h0 micro micro0 versus h1 micro gt micro0. calculate the p -value for the following
Is there meaningful relationship between grades and SAT scores? If student scores 450 on the SAT, what do youbelieve his or her GPA will be?
A company wants to know if minorities are more likely to be in certain job categories than others. Their data base codes employees 1 for clerical, 2 for custodial, and 3 for manager. A logistic equation was fit to the data with SPSS.
the data on the weight of male and female wolves from two random samples are as followsfemale 57 84 90 71 71 77 68
If average size in square feet of homes built is 1810, determine maximum and minimum sizes of homes contractor must build. Suppose that standard deviations are 92 square feet.
records indicate that on average 3.2 breakdowns per day occur on an urban highway during the morning rush hour.
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