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Use the normal distribution to approximate the following probability: According to the most recent Davenport student profile, 47% of students have children under 17 living at home with them. Find the probability that a random sample of 800 students will return more than 50% students with children under 17 living at home with them.
What does the coefficient of determination tell you about the variation attendance and the variation in the number of exhibitors?
A biologist has found the average weight of 12 randomly selected mud turtles to be 8.7 lb with standard deviation 3.6 lb. find a 90% confidence interval for the population mean weight of all such turtles.
Compute the proper measure of association of smoking and lung cancer.
This morning the office you are monitoring has eight office visits on the schedule. What is the probability that:
1st a confidence interval is constructed without utilizing the finite population correction factor.
Show that someone will think that the claim has more than a fifty percent chance of being true if p > q / (1 + q). Explain.
Find the percentage of buyers who said their price range is between $150,000 and $153,300.
Calculate p value? What is the critical value?
Assume that demand for the upcoming weekend is normally distributed with a standard deviation of 30. (a) What is the probability that all the hotel's room will be rented?
For the past 20 years, the high temperature on April 15th has averaged (j = 62 degrees with a standard deviation of a = 8. Last year, the high temperature was 66 degrees.
Each vehicle had the gallon of gas added to the empty tank and then driven until empty. Number of miles travelled for all twelve readings are below. Use data to compute the mean and median mileages.
For a new HDTV the mean number of months until repairs are needed is 36.84 with a standard deviation of 3.34 months.
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