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415 kdg kids have seen average 5000 hrs of tv, standard dev of 900 hrs. Find a 98% confidence interval for mean
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In a recent survey, 61% of the community favored building a police substation in their neighborhood. If 14 citizens of the neighborhood are chosen. A. Find the probability that exactly 12 of them favor building the police substation.
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Consider the following data. Do heavier cars really use more gasoline? Suppose a car is chosen at random. Let x be the weight of the car (in hundreds of pounds), and let y be the miles per gallon (mpg).
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find the critical values x^2L and x^2R for the giving confidence level C and sample size N. C= 0.99, N=20
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An auto manufacturer advertises that 90 percent of the cars we have ever made are still on the road. Assuming this is literally true, how can it be explained? What facts and/or statistics would you need to know to expose this misleading claim?
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A survey of students found that 61% of them have their tuition paid for by their parents. If 8 students are selected at random, find the probability that these students have their college tuition paid for by their parents.
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Ms. Fields cookies have brand recognition of 90%. A sample of 10 randomly selected consumers were selected, find the probability of less than 8 of them recognizing the brand. I just want the correct steps!
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3.85 Suppose that on a certain section of I 95 with a posted speed limit of 65 mph, the speeds of all vehicles have a bell shaped distribution with a mean of 72 mph and a standard deviation of 3 mph. a. Using the empirical rule, find the percentage of vehicles with the following speeds on...
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what is the probability that a man between the ages 18 to 24 years of having a cholesterol level greater than 145?
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what is a potential confounder
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