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The time that it takes to assemble a piece of machinery is well modeled by the normal distribution with mean μσ = 72.9 minutes and standard deviation = 8.55 minutes. What is the probability that it will take more than 80 minutes to assemble the next piece of machinery? Round your answer to 3 places of decimal.
The video makes the point that though nobody wants to think that they are a statistic, acting as if you are a statistic can help you make better decisions. That said, statisticians should never forget that the numbers they analyze correspond to re..
Construct a 95% confidence interval for the population proportion of Americans who would answer this question with "Very Likely" or "Somewhat Likely." lower bou
A particular hair treatment program has caused hair growth in 70% of its users. A random sample of 15 users is obtained. Determine the following probabilities:
among eighteen computers in some store six have defects. five randomly selected computers are bought for the university
For each of the following time series, do you think the long-term trend would be positive, negative, or nonexistent?
Go through the conditions for which the sampling distribution of a sample proportion is approximately normal, and explain why they would apply to this situation.
Best's Review (June 1999) compared the mortgage loan portfolios for a sample of 25 life health insurance companies. The information in the table on page 629 is extracted from the article.
one concern about the depletion of the ozone layer is that the increase in uv light will decrease crop yields. an
a clinical trial is run to investigate the effectiveness of an experimental drug in reducing preterm delivery to a drug
Lost luggage. A Department of Transportation report about air travel found that airlines misplace about 5 bags per 1000 passengers.
suppose x is uniform on 01 and y x. find the joint distribution function of x and
Assume the standard deviation of daily coffee consumption per day is 0.5 cups. Using a=0.01?, complete parts a and b below.
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