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Mean Grade Point Average. As part of a study of grade inflation, you want to estimate the mean GPA of all current college student in the U.S. All GPAS are to be standardized for a scale between 0 and 4. how many GPA averages must be obtained so that the sample mean is within 0.2 of the popluation mean? Assume that a 99% confidence level is desired. Also assume that a pilot study showed that the population SD is estimated to be 0.79. Does it make sense to collect the entire sample at your college?
the following sample was obtained from a population with unknown parameters.scores 612034.a. compute the sample mean
Find out the critical value for the given degrees of freedom of the F-test also the lower-tailed critical value of F test for the similar level of significance
the probability of obtaining a head when a certain coin is flipped is about 0.65. what is the probability that heads
Based on the sample findings, estimate the true mean of Saturday sales with 90% probability.
Rrequired service under the warranty. consider a new dealer. what is the probablity that the first claim under this warranty is the tenth car sold?
At the .05 level of significance, can we conclude that those joining Weight Reducers on average will lose less than 10 pounds? Determine the p-value.
A citrus company is interested in evaluating the performance of two orange juice extractors, A and B. It is believed that both the size and the variety of the fruit yield in the test may influence the yields (percentage juice by weight) obtained f..
a 6-faced die is rolled two times. let a be the event that the outcome of the first roll is greater than 4. let b be
a confidence interval with a 95 confidence level for the proportion of voters who are in favor of the proposition in a
Based on the expected value of the lottery ticket, would you pay $1 for a ticket? Round the answer to 3 decimal places. Omit the "tiny_mce_markerquot; sign in your response.)
a cereal manufacturer has a machine that fills the boxes. boxes are labeled 16 oz so the company wants to have that
What does the intercept mean in this context? What is the estimated percent decline in visual field per year?
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