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You believe the annual mean vehicle miles of travel per household is greater than 22,000 miles. You do some research and find that a random sample of 36 US household has a mean annual VMT of 22,200 miles with a standard deviation of 775 miles. You conduct a statistical experiment where null hypothesis is less than and equal to 22,000 and alternative hypothesis is greater than 22,000. At level significance 0.05, explain why you cannot reject null hypothesis.
What regression equation would you want to do for banking? Give the y and x variables. Explain why this would be important to know.
Public transportation and the automobile are two methods an employee can use to get to work each day. Samples of times recorded for each method are shown. Times are in minutes.
Estimate a test statistic for null hypothesis H0: μ = 30 against two-sided alternative hypothesis H1 : μ ≠ 30, and by plotting this on its reference distribution.
For n=25 make up three values of that would be considered typical for a sample from this population. Make up three data points that would be considered typical from this population.
Suppose the likelihood that any flight on Northwest Airlines arrives within 15 minutes of scheduled time is .90. We choose four flights from yesterday for study.
Psychological test. For the sample data, n = 50,mean = 17.3 and S.D = 5.4.USE level of significance = .05. Complete hypotheses testing using P value approach.
Suppose that 40% of cars in your area are manufactured in the United States, 30% in Japan, 10% in Germany, and 20% in other countries. If you randomly select 6 cars, what is the probability that two of them are Japanese?
Describe the situation and the variables and determine whether the variables are normally distributed or not. How could you change these to a normally distributed dataset?
First National Bank and City National Bank are competing for customers who would like to open IRAs. 32 weeks are randomly selected for First National Bank and another 32 weeks are randomly selected for City National.
Suppose the college in question 12 has only graduated 10,000 students. Construct a 96 percent confidence interval for the mean time required for all graduates to earn a bachelor's degree.
Find the calcium level that is the borderline between low calcium levels and those not considered low. Carry your intermediate computations to at least four decimal places.
If a card is drawn at random from a standard 52-card deck, what is the probability that the card drawn is one of the following?
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