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Among the thirty largest U.S. cities, the mean one-way commute time to work is 25.8 minutes. https://deepblue.lib.umich.edu/bitstream/handle/2027.42/112057/103196.pdf?sequence=1&isAllowed=y. The longest one-way travel time is in New York City, where the mean time is 38.9 minutes. Assume the distribution of travel times in New York City follows the normal probability distribution and the standard deviation is 7.9 minutes.
test the claim that the mean time americans spend watching tv per day is 4.4 hours at the 0.10 level of significance. a
Let P(X) _ .55 and P(Y) _ .35. Assume the probability that they both occur is .20. What is the probability of either X or Y occurring? Suppose P(X1) = .75 and P(Y2|X1) = .40. What is the joint probability of X1 and Y2?
1. State the null hypothesis and the alternative hypothesis. 2. Compute the value of the test statistic. 3. Compute the observed significance of the test. 4. Which of the following is the correct decision regarding the null hypothesis at 1% significa..
a study is conducted to compare mean cholesterol levels for individuals following a low carbohydrate diet for at least
Is there evidence to suggest a difference in the mean waiting times at the four body shops? Use the .05 significance level.
USA today conducted a survey asking readers, "What is the most hilarious thing that has ever happened to you en route to or during a business trip? What kind of sampling method is this?
The mean height of women in a country (age 20-29) is 64.3 inches. A random sample of 75 women in this age group is selected. what is the probablity that the mean height for the sample is greater than 65 inches?
in a class of 100 students 30 are computer science majors 49 are mechaincal engineering majors 13 are civil engineers
A random sample of 166 firms in the Fortune top 1,000 was chosen, and 59 of the firms replied that they used the multiple-scenario approach. Conduct the hypothesis test at α = 0.05. What is the p-value?
1. For each of the following functions decide whether or not the function is a linear transformation. Prove your answer in each case :
Perform an ANOVA, fill out a summary table, and write an interpretation of the analysis at this point.-If appropriate, calculate HSDs for all pairwise comparisons.Write an overall interpretation of the results of the study.
Sports and Leisure. The mean duration of a Major League baseball game from the first pitch to the last out over the first eight weeks of the 2013 season.
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