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Q1) Random telephone survey asked 208 drivers if they run red lights. Of 48 drivers who were 35 years old or younger, 32 admitted that they run red lights. 86 of the 160 drivers that were older than 35 years old admitted to running red lights. At 0.01 level of significance, test claim that percent of drivers who are 35 years old or younger and who run red lights is higher than the percent of drivers who are older than 35 years old and who run red lights.
Q2) Math instructor has written new placement exam. He is concerned that exam may be too long. Instructor claims that the average length of time needed to finish exam for all students who take it is at most 50 minutes. Exam is given to 20 randomly chosen students and their average length of t time needed to finish exam was 54 minutes with standard deviation of 5.99 minutes. Test instructor's claim at the 0.05 level of significance.
Take a confidence interval for the difference in the average of renting between the first andthird hotel.
If the sum of the squared deviations about the regression line is SSE = 40.0, what is the coefficient of determination?
Create a set of n observations from the binomial distribution with 1 trial and the event probability of 0.007, where n is your answer.
Find out the probability
Dating In Chances- Risks and Odds in Everyday Life, James Burke claims that about 70 percent of all single men would welcome a woman taking the initiative in asking for a date. A random sample of 20 single men was asked if they would welcome the woma..
At the .01 significance level, can we conclude that the 30-yeer mortgage rate for small banks is less than 6 percent? Estimate the p -value.
They were planted in four different locations, so we will consider the field as a second factor because different soil and moisture types can also have an effect on yield. The interaction plot below was obtained.
Use either Linear Programming module or Transportation module of Cd to minimize the shipping costs involved in move.
Why is it misleading to draw the conclusion from the test above that long-time exposure to cadmium reduces the vital capacity?
Report the t-value, whether you accept or reject Ho, and whether the difference was significant in a brief sentence.
Write a one-page report to Ms. Gupta presenting your conclusions regarding the market performance of Brand 1.
Times spent studying by students in the week before final exams follow a normal distribution with standard deviation 8 hours. A random sample of four students was taken in order to estimate the mean study time for the population of all students.
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