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In 2006, it was determined that 54% of Americans under the age of 24 felt that marijuana should not be legalized. Suppose a follow-up study is to be conducted next year, using a sample of 100 Americans under the age of 24. Please use 54% as though it were the value of the true proportion p {"version":"1.1","math":"p"}.
Calculate the probability that the sample proportion for the follow-up study will be between 0.48 and 0.60._______
Calculate the probability that the sample proportion for the study will be less than 0.40._______
Using the original data, test at the 5% significance level that the population standard deviation of studying times is greater than 4 hours.
Comment on the graphical comparison between the estimates obtained with the automatically selected spans in Problem 8 and the estimate obtained from Friedman's smoother using the cross-validation span in Problem 1.
the t distribution has more area in the tails and less in the center than does the standard normal
A mean of 2000 pounds and a variance of 2500 pounds. Let X be the mean of any sample of 100 ropes selected at random. find the expected value and the standard error of X.
Bill has just started working for a major grocery store as a check-out clerk. Mason is training him in the duties of the new position. At the end of the first day, Bill and Mason are counting the cash in their drawer and reconciling cash receipts ..
according to a recent survey about 33 of americans polled said that they would likely purchase reusable cloth bags for
Find the mean, median, and mode of the unemployment rate and Find the variance, standard deviation, and coefficient of variation.
a sample of 31 data points was collected from a population whose mean is 20 and standard deviation is 3. if a randomly
quality are reliability are becoming important aspects of computer hardware and software. past experience shows that
Each of 2 cabinets identical in appearance has 2 drawers. Cabinet A contains a silver coin in each drawer, and cabinet B contains a silver coin in one of its drawers and a gold coin in the other. A cabinet is randomly selected, one of its drawers ..
Compare BSN students who have lecture to those who do not receive lecture on safety. Compare ASN students who have lecture to those who do not receive lecture on safety
boeing has developed a new drilling tool that drills hole for riveting on the 787 wings. the standard deviation of hole
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