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A sample of n 8 scores has a mean of M 12. One new score is added to the sample and the new mean is found to be M 13. What is the value of the new score?
Once production is set up, 80 units can be produced per day. Daily demand rate for the units is 60 per day. a. What is the most economical number to produce per production run? b. How long is each production cycle?
Provide a description of one method for estimating the reliability and one method for substantiating the validity of a test.
Site preparation for new housing developments for tracts of 40 houses is normally distributed with a mean of 250 workdays and a standard deviation of 25 workdays.
A) What is the name of the distribution of the number of satisfied customers from this sample? B) What is the expected value? C) What is the standard deviation?
How much difference does the choice of model make? Which forecasts do you trust the most, and why? (f) If you have access to Ward's Automotive Yearbook, check your forecasts.
What is the standard deviation of the number of service calls and compute the coefficient of variation of the number of service calls.
If we wanted to shorten the interval of the estimation of the true mean of Saturday sales to a width of $600 in total, what should the size of our sample be to achieve it?
do children less than a year old recognize the difference between naughty and nice and show show a preference for nice
Using t test for significance of slope to determine whether the independent variable is a significant predictor of the dependent variable - Find the sum of the least squares slope and intercept parameter?
If the sum of squares regression is 1,000 and the sum of squares total is 5,000. Given that the sum of squares residual (or error) is 4,000 what is the r-squared value?
Calculate the average of deposits per bank for FDIC- inured institutions during both time periods and describe the relationship between the two averages. Provide a reason for the difference.
A campus researcher wanted to investigate the factors that affect visitor travel time in a complex. multilevel building on campus.
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