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A study conducted by a research program found the 39.5% of college freshmen spent six or more hours a week studying or doing homework during their senior year in highschool. To verify these results, a random sample of 200 freshman was asked how many hours they studied a week during their senior year in high school. A total of 88 students from this sample responded what they studied six or more hours a week. Which of the following statements is correct?
For each of the following three scenarios, state which hypothesis test you would use from among the four introduced so far: the z test, the single-sample t test, the paired-samples t test, and the independent-samples t test.
a sample of 144 students is taken from a population of 2000 high school students to estimate the proportion of students
The weight of a product is normally distributed with a standard deviation of .5 ounces. What should the average weight be if the production manager wants no more than 5 percent of the products to weight more than 5.10 ounces.
a test consists of 10 true or false questions. to pass the test a student must answer at least eight questions
suppose the lifetime of a particular appliance follows an exponential distribution with a mean of 10 years. what is the
Show the differences between histogram and historigram
Use Chebyshev’s Inequality to solve this problem. Show your work. A machine used to fill cereal boxes dispenses on average µ ounces per box. The manufacturer wants the actual amount dispensed, Y , to be within 1 ounce of µ at least %93 of the time. W..
A federal report find that a lie detector test given to truthful persons have a probability of 0.2 of suggesting that the person is deceptive. What is the probability that at most one is being deceptive
What is the predicted GPA if a person watches 12 hours of television per week?
To forecast future cigarette sales, the last four years' quarterly sales were recorded in the Excel file Tute10-Q1.xls. Calculate the 3-quarter and 5-quarter moving averages. Show the relevant graphs. Interpret the results. Compute MAD and SSE for ea..
If µ = µ1 = µ2 = µ3 = 60 and σ21 = σ22 = σ23 = 15, calculate the probability that the total time to finish the three repair tasks is at most 200 minutes.
What recommendation would you have for each state to maximize revenue? c. Which state was most likely to be following a political unsupportable policy?
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