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The probability of someone ordering the daily special is 52%. If the restaurant expected 96 people for lunch, how many would you expect to order the daily special?
The manufacturer of the X-15 steel-belted radial truck tire claims that the mean mileage the tire can be driven before the tread wears out is 60,000 miles. The standard deviation of the mileage is 5,000 miles.
The final exam scores for 15 students are 73, 74, 92, 98, 100, 72, 74, 85, 76, 94, 89, 73, 76, 99. Compute the mean and median.
in a study by peter d. hart research associates for the nasdaq stock market it was determined that 20 of all stock
Construct a 95% confidence interval for the proportion of all programmers in the population from which the sample was selected who prefer Java.
Fast food is often considered unhealthy because much of it is high in both fat and sodium. But are the two related? Here are the fat and sodium contents of several brands of burgers. Analyze the association between fat content and sodium.
Compute the mean and standard deviation of the random variable X, the number of smokers who started before 18 in 200 trials of the probability experiment.
one environmental group did a study of recycling habits in a california community. it found that 73 of the aluminum
Suppose that in the long run thirty percent of all vehicles passing through a tollbooth are 4WDs. If a random sample of 120 vehicles passing through the tollbooth is taken, what is the probability that the sample proportion containing 4WDs is betw..
for the following sample8 1 51 5a. find the mean and the standard deviation.b. now change the score of x8 to x18 and
The first randomly selected drinker qualifies.- Three soft drink users will have to be interviewed to find the first Gatorade drinker.
What is regression to the mean, and why is it a threat to the validity of research designs in which random assignment has not been used?
A random sample of 21 nickels measured with a very accurate micrometer showed a mean diameter of 0.834343 inches with a standard deviation of 0.001886 inches. Why would nickeldiameters vary
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