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The 30 members of an orchestra were asked how many instruments each could play. The results are set out in the frequency distribution. Calculate the mean number of instruments played:
Number of instruments, x 1 2 3 4 5Frequency, f 11 10 5 3 1
Find out the Optimum solution using the given data. Consider the following linear programming problem. Illustrate what is the optimum solution to this problem?
What was the purpose of calculating a Cohen's d? When is a Cohen's d calculated? Interpret d=.90. What does it mean in this example?
Use the marginal probabilities of school quality, school cost or convenience, and other to comment on the most important reason for choosing a school.
A gender selection method is effective in helping couples have baby girls, and among 45 babies, 24 are girls. Create subjective estimates to conclude that the evidence does support the claim or that the evidence does not support the claim. Use the..
Estimate the probability the store will gross over $850 a) At least 3 out of 5 business days.
Scores on a test are normally distributed with a mean of 60.9 and a standard deviation of 12. Find P81, which separates the bottom 81% from the top 19%.
Gestational Age (Gestage, weeks) for sample of 100 low birth weight infants, and output from fitting a simple linear regression model to data, regressing Headcirc (Y) on Gestage (X).
Construct a 90 percent confidence interval for the proportion of all kernels that would not pop.
Assume that demand for the upcoming weekend is normally distributed with a standard deviation of 30. (a) What is the probability that all the hotel's room will be rented?
The CEO of the business has nothing better to do wheras measured the temperatures of 26 department managers 1 to 4 times every day to get a total of 123 measurements.
If historical time series data is very limited, what type of forecasting approach would be useful.
There are three flight phases. At α = 0.05, is the cockpit noise level independent of flight phase?
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