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Create a histogram for the following data of the number of miles from residence to place of employment for 30 randomly selected residents of Middletown County.
0.6 1.4 1.8 2.4 3.2 3.7 4.4 4.6 5.2 5.3
5.4 5.6 5.9 6.1 6.5 6.7 7.2 7.7 8.3 9.5
10.3 11.4 13.5 14.7 15.6 18.5 24.6 37.8 42.5 45.3
Determine the probability of fatal accident over a lifetime? Describe your reasoning carefully. Hint: Suppose independent events. Why might the supposition of independence be violated?
A local group claims that the police issue more than 60 speeding tickets a day in their area.
The study does provide sufficient evidence to support the claim that less than 75% of college student spend less than $250 per semester on textbooks.
Describe the given data show a seasonal effect using moving average method. Describe the data which show a seasonal effect.
An independent testing services road-tested 36 of the automobiles.
Conduct the hypothesis test and compute the p-value. At a 0.05 level of significance, what is your conclusion?
A market survey was conducted to estimate the proportion of homemakers who would recognize the brand name of a cleanser based on the shape and color of the container. Of the 1,4000 homemakers sampled, 420 were able to identify the brand by name.
In a binomial distribution n = 8 and π = 0.2. Determine the probabilities of the following events.
What is the expected shape of the distribution of the sample mean?
Suppose that Total Revenue = 200Q and Total Cost = 80 + 50Q where Q, the quantity sold, is a random variable with expected value 20 and variance 4.
If code is 4 random letters, and letters can be utilized multiple times, how many different possible codes are there?
Determine what analysis would you do on each problem (ie, one-sample z-test, one-sample t-test, proportion test, two-sample independent t-test, or paired test)?
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