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Mean score on 10 item test for all students enrolled in a Traditional course was 9.64. A random sample of 41 students in Project Course is given same test, and the mean and standard deviation for this sample are 11.52 and 7.06, respectively. Test the hypothesis at the .05 level that the mean score for all Project Course students on this test is higher than 9.64.
Tired of careless spelling and grammar, a company decides to administer a test to all job applicants. The test consists of 20 sentences. Applicants must state whether each sentence contains any grammar or spelling errors.
What type of probability distribution is appropriate for this problem? Determine the probability of getting no calls between eight and nine in the morning. Calculate the probability of getting exactly five calls between eight and nine in the morning
Use the marginal probabilities of school quality, school cost or convenience, and other to comment on the most important reason for choosing a school.
Todd is less interested in testing a hypothesis than he is in developing an estimate for what people would be willing to pay. He would like 95% confidence intervals for the average price people would be willing to pay
The average American male wears a size 10 shoe and spends 4 hours a year tying a tie. The average American female college student owns 3.5 pairs of jeans.
Cards are drawn one by one from a standard deck of 52 cards. Let X be the number of draws up to and including when the first diamond is drawn. If the cards are replaced in the deck, determine E(X). If the cards are not replaced in the deck, determ..
A random sample of 80 observations from a normally distributed population produced a mean x(bar over the x)= 22.6 . Find a 95% confidence interval for the population mean m if the population standard deviation
Find out the conditional probability for the given data. Illustrate what is the conditional chance that the selected person is male?
Your workplace reduces all workplace scores on particular employee aptitude test in z-scores which are placed in district-wide distribution of scores.
Describe the types of decisions that do not involve uncertainty and risk and common approaches used for analyzying them.
What is correlation analysis? How can correlation analysis be used in a business decision or examples specifically related to strategy formulation and implementation?
Continuous random variable is uniformly distributed between a and b. The probability density function between a and b is.
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