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A report issued by the American Association of Building Contractors indicates that 40% of all home buyers will do some remodeling to their home within the first five years of home ownership. Assuming this is true, what is the probability that in a random sample of 20 homeowners, 2 or fewer will remodel their homes.
The following table provides the weight in grams of a sample of 50 bags produced in one hour by a single machine: Compute the arithmetic mean and median.
What is the probability of selecting a value at random and discovering that it has a value of less than 395 pounds?
Then you travel the same distance to another point C moving at a constant speed of 120 km/h. Your average speed for the entire trip from A to C is?
A random sample of 16 ages is drawn from the population, and we find the sample mean of these observations to be μ = 8.76
A prestigious university requires a score of at least 750 on a graduate exam for admission to its MBA program. Suppose the graduate exam is normally distributed with a mean of 500 and a standard deviation of 200.
Calculate a 95% confidence interval for the average lifetime of the washing machines that the company uses. Calculate the sample size required to reduce the margin of error for a 95% confidence interval down to 7 (i.e. E = 7).
the length of an injection-molded plastic case that holds magnetic tape is normally distributed with a length of 90.2
Compute the test statistic. Using = 0.05, perform the test using either the critical value approach or the p-value approach. What is your conclusion?
question two different lab machines measure the sodium content in milligrams of the same 10 blood samples below. at
Choose at random one of the random sample averages of 5 rectangles. Calculate the average value for a random sample of 20 rectangles.
Throughout history 55% of registered voters actually have cast a ballot. What is the probability that among a group of 28 students who are registered voters more than 19 will vote?
1.i wish to find a 95 confidence interval for the mean number of times men change channels with a remote control during
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