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Find the critical value from Table L for the rank correlation coefficient, given sample size n=12 and alpha=0.02
What is the relative frequency of classical CDs with a playing time of X less than 49 minutes? That is, find the relative frequency of the event X
An elevator has a design capacity of 2,560 pounds and a posted limit of 16 passengers. The weight of adults is approximately normal with a mean of 150 pounds and standard deviation of 20 pounds.
Determine the critical region and critical values for z that would be used to test the null hypothesis at the given level of significance, as described in each of the following:
Determine the mean for list of numbers. 6, 5, 9, 4, 14, 9 (Round to the nearest tenth)
assume credit card balances are normally distributed with a mean of 2870 and a standard deviation of 900 - assume these
many customers complain because the declared lifetime of the light bulb you produce is 1000 hours while they seem to
The ACT is also distributed with meanof 21 and standard deviation of 4.7. Rachel wants to be in the 98th percentile on each test. What scores must she recieve on each exam?
Bowling balls the sample standard deviation was found to be 0.52 pounds. Construct a 95% confidence interval for the variance of the bowling ball weight.
in rolling a die the probability of obtaining 2 3 or 4 in three statistically independent throws
each year about 1500 students take the introductory statistics course at a large university. this year scores on the
the data set toxemia contains information for a sample of 100 infants born in two hospitals in boston. indicators of a
Show that if in the Law of Large Numbers we omit the assumption that all the X have the same mean and replace the m in the conclusion by [E(X1)+...+E(Xn)]/n, the law remains valid.
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