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The mean thickness of book covers from a large publisher is μ=5mm with a standard deviation of σ=.5mm. In a random sample of 25 books from the population what is the likelihood that the mean thickness of the sample will lie between 4.8 and 5.2?
Why do you believe it is important to be able to freely move from window to window when creating your database?
Let x = the number of sick days they took for the past year. Should the personnel team believe that the mean number is ten?
Education among young adults Choose a young adult (aged 25 to 29) at random. The probability is 0.13 that the person chosen did not complete high school.
A student wanted to study the ages of couples applying for marriage licenses in his county. He studied a sample of 94 marriage licenses and found
The regression equation is Y = 29.29 - 0.96X, the sample size is 8, and the standard error of the slope is 0.22. What is the critical value to test the significance of the slope at the 0.01 significance level?
a clinical trial tests a method designed to increase the probability of conceiving a girl. in the study 562 babies were
?Deborah? Hollwager, a concessionaire for the Amway Center? in? Orlando, has developed a table of conditional values for the various? alternatives
Is X a random variable? Explain your answer.- Give the probability distribution of X.- Explain how you would calculate the mean of X, then calculate it.
Conduct a statistical test to determine if the sample is representative of the population.
Find an equation of the least squares regression line. Show all work; writing the correct equation, without supporting work, will receive no credit.
a certain zoo is know to collect unusual animals from different animal groups. one ostrich specimen in the zoo weighs
Which is more usual, a flight arriving 4 minutes earlier than the mean delay time or a flight arriving 4 minutes after this time? Explain.
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