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In the last quarter of 2007 a group of 64 mutual funds had a mean return of 1.2% with a standard deviation of 6.5%. Consider the Normal model N(0.012, 0.065) for the returns of these mutual funds. The value that represents the 99th percentile is what percentage?
Identify the type of sampling (random, systematic, convenience, stratified, cluster) used when a sample of people who smoke is obtained as described below.
Digital camcorder repair service has set the goal not to exceed average of 5 working days from time unit is brought in to time repairs are completed. Compute the t-value.
Perform a correlational analysis on the following variables: Student Extroversion, Lecture Extroversion, Student Agreeableness, Lecture Agreeableness.
Compare these with the percentages specified by Tchebysheff's Theorem.
The rest type AB. Someone volunteers to give blood, what is the probability that this donor has the complement of type O?
Estimate the number of workers in the sample who are union members by giving the mean of the relevant distribution (that is, the expectation of the relevant random variable). Do not round your response.
Pilots who cannot maintain regular sleep hours due to their work schedule often suffer from insomnia. A recent study on sleeping patterns of pilots focused on quantifying deviations from regular sleep hours.
I have the t-score of 1.660 an a standard error of .036. I hope they are correct, but also need the test effect and test statistic, p-value.
What is the probability of randomly selecting a sample of 50 one bedroom apartments in this town and getting a sample mean of less then $530 if the population standard deviation is $100?
The results of a recent poll on the preference of shoppers regarding two products are shown below.
What is the probability that a subscriber rented a car during the past 12 month for business or personal reasons?
How would a decrease of $1 in the x1 coefficient of the objective function affect the optimal values of the decision variables?
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