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Construct a 90% prediction interval for sales when the total sq footage is 4.2 billion. The equation of the regression line is yhat=499.967x - 1595.147
total sq footage, x: 4.9 5.1 5.2 5.3 5.4 5.6 5.9 5.9 6.1 6.1sales, y: 875.8 940.8 987.9 1064.8 1121.3 1206.4 1284.1 1340.5 1432.5 1542.6
In some places in the US, people are aware of the need for more care for older citizens, like Dr. Hope. In the election in one area, they put forward a referendum that would increase the county sales tax by one cent to pay for increased services f..
Test to see if the mean cell phone bill has changed since 2004. Use a .05 level of significance for the test.
Consider babies born in the "normal" range of 37 - 43 weeks gestational age. What is the probability that the birth weight of a randomly selected baby of this type:
A researcher studies the average distance that 130 people who are living in U.S. urban areas walk each week: What is the size of the sample? Identify the population.
Suppose that about 48% of all infants are girls. The maternity ward at a large hospital handles 1000 deliveries per year. A smaller hospital in the same city records about 50 deliveries per year. At which hospital is it more likely that between 46..
A sample of 60 students from a large university is taken. The average age in the sample was 22 years with a standard deviation of 6 years.
I am to compute expected values, test stat, use p-value approach and determine critical value with alph at .05
Construct a time series plot. What type of pattern exists in the data? Compute the exponential smoothing forecasts for a = .2.
Truck tire life is normally distributed with a mean of 60,000 miles and a standard deviation of 4,000 miles. You bought four tires. What is the probability that the average mileage of the four tires exceeds 66,000 miles?
Reggie Miller of the Indiana Pacers is the National Basketball Association's best career free throw shooter, making 89% of his shots. Assume that late in a basketball game, Reggie Miller is fouled and is awarded two shots.
Use the binomial distribution formula to calculate the probability that a) out of 5 adults, none is concerned that employers are monitoring phone calls.
Mutual funds are classified as large-cap funds, medium cap funds, or small-cap funds, depending ont eh capitalizaiton of the companies in the fund.
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