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Each year, ratings are compiled concerning the performance of new cars during the first 90 days of use. Suppose that the cars have been categorized according to whether the car needs warranty-related repair (yes or no) and the country in which the company manufacturing the car is based (United States or not United States). Based on the data collected, the probability that the new car needs warranty repair is 0.04, the probability that the car was manufactured by a U.S.-based company is 0.60, and the probability that the new car needs a warranty repair and was manufactured by a U.S.-based company is 0.025. Construct a contingency table or a Venn diagram to evaluate the probabilities of a warranty-related repair. What is the probability that a new car selected at random
a. needs a warranty repair?
b. needs a warranty repair and was manufactured by a U.S.- based company?
c. needs a warranty repair or was manufactured by a U.S.- based company?
d. needs a warranty repair or was not manufactured by a U.S.-based company?
In testing equality of two means below, determine the test statistic? (Use the equal variances formula)
Florida State University administers a test of mathematics placement to students when they first enter the university.
Assume the first patient is assigned treatment A, and whenever there is a tie in marginal discrepancy, the next patient is assigned treatment A. Use w0 = 2 and w1 = 1. Show all you work.
Using a level of significance of .10, is there evidence that the population mean weight of the candy bars is greater than 7.3? Explain.
Use this information to determine the empirical probability that the next bird to visit the feeding station will be a dove.
Enter relative proportions of the 3 samples in order (20,50,30) in "Expected values" area.
Determine the mean and standard deviation for number of actual voters in groups of 1002.
Difference in the mean number of times men and women order take-out dinners in a month? What is the p-value?
Create a 95% confidence interval for true mean debt for student borrowers.
If a single test is run and indicates that oil is present, what is the revised probability that oil is actually present?
You listen to radio station for 1 hour, at arbitrarily selected time, and carefully observe that amount of advertising time is equal to 7 minutes. Compute z-score for this amount of advertising time.
We have a deck of 52 playing cards. What is the probability of drawing?
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