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A student scores 81 on a chemistry test and 75 on a history test. For the chemistry test, the mean was 70 and the standard deviation was 20. For the history test, the mean was 65 and the standard deviation was 8. Did the student do better on the chemistry test or the history test? Simple explanation why?
Construct a payoff table for Mountain Ski's decision problem of how many pairs of skis to order. What is the best decision from an expected value basis?
What was the highest score earned on the exam? According to Chebyshev's Theorem, how many students scored between 42 and 74?
Which of the following statements regarding the coefficient of correlation is true. A value of 0.00 indicates two variables are not related.
What is the p-value associated with the above sample result?
Metal stamping machine is producing 10 defective parts per hour. Determine the probability that three or fewer defective parts will be output in a randomly chosen hour, by using the Poisson distribution?
Suppose the probability of the worst-case scenario increases Compute the expected value of perfect information
If the standard deviation of the amount of coffee dispensed is 0.4oz and the amount of coffee dispensed is normally distributed.
The assembly time for a product is uniformly distributed between 6 to 10 minutes. The probability of assembling the product between 7 to 9 minutes is
A researcher is interested in whether social assertiveness might be influenced by training procedures. Two groups of college sophomores are randomly selected. Group A subjects are assigned to the "training sessions" and Group B subjects do not rec..
Calculate the 95% confidence interval for the rate of positive tuberculin reaction separately for each of the two subpopulation, those with high exposure and those with low exposure.
At the .05 significance level, is the number of units produced on the afternoon shift larger?
An educational study utilizes a simple pre post design to assess the efficacy of a computer tutor for solving inequalities.
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