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New soft drink is being market tested. A sample of 400 individuals participated in the taste test and 100 indicated that they like the taste. We are interested in determining if more than 21% of the population will like the new soft drink.
a. Set up the null and the alternative hypotheses.b. Determine the test statistic.c. Determine the p-value.d. At 95% confidence, test to determine if more than 21% of the population will like the new soft drink.
A statistics profressor plans classes so carefully that the lengths of her classes are uniformly distributed between 50.0 and 60.0 minutes. Find the probability that a given class period runs great than 50.5 minutes.
Testing for population mean - warp-breaking specification of the manufacturer at the .05 level of significance?
Determine the critical region and critical values for z that would be used to test the null hypothesis at the given level of significance, as described in each of the following:
The owner of a restaurant has just changed the delivery process in order to reduce the mean time between the order and completion of delivery from the current 25 minutes.
Arthur Schopenhauer, which view of experience seems closest to how you view the world? Briefly explain this philosopher's view as it compares to your view.
You are estimating the install hours for an electronics upgrade based on the number of components affected. The upgrade for which you are estimating affects 25 components. Given the following equation, select the correct response from each pair.
Suppose we wish to test the hypothesis H0: = µ2 vs. H1: = µ≠2 We find a two sided p-value of .03 and a 95% CI for µ of (1.5, 4.0) Are these two results possibly compatible? Why or why not?
The boys with certificates of recognition. What time would the boys need to beat in order to earn a certificate of recognition from the fitness association?
At the .01 significance level, is there a difference in the mean number of times men and Women order take-out dinners in a month? What is the p -value?
The chance of selling any one property is independent of selling another property. Compute the probability of selling at least 4 properties in one week.
How many commuters must be randomly selected to estimate the mean driving time of Chicago commuters? We want 98% confidence that the sample mean is within 2 minutes of the population mean.
Solve following for x, expressing answers as compound fractions and integers where appropriate:
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