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ABC Convenient stores uses fixed-time period model to determine order quantity for their popular chewing gum (Supergum). Daily demand for Supergum is 100 units with a standard deviation of 25 units. The review period is 10 days and lead time is 6 days. At the beginning of this review period there are 50 units in stock.
If 98% service probability is desired, how many units should be ordered?
Carry out a test of hypothesis on each of regression coefficients. Could you delete any of the variables?
At.05 level of significance test to find out if number of breakdowns is independent of shift.
A study 200 nurses found that of 125 females nurses, 56 had bachelor's degree; and of 75 male nurses; 34 had bachelor degrees. if a nurse is selected at random, find the probability that the nurse is a female nurse with a bachelor degree.
What fraction of the calls last between 4.2 and 5 minutes?
What are the limitations and assumptionbs of the t-test? What are some examples in your field (Nursing) for which you might use a t-test to compare a sample to the population and why?
Calculated test statistic, decision about the null hypothesis interpretation of results, and a list of references consulted.
About 40% of the general population donate time and energy to community projects. Suppose 15 people have been randomly selected from a community and each asked whether he or she donates time and energy to community projects.
Generate three random observations from the uniform distribution between -10 and 40 by using the following random numbers:
Suppose we have run a regression on 48 months of data and the regression equation is Y = 50000 + 1000*x (where x is the month number).
Mention the experimental outcomes. Illustrate out a random variable threat that represents the number of heads occurring on the two tosses.
Would you expect the mean absolute percentage error to be more than or less than 0.25? Describe.
According to an IRS study, it takes a mean of 330 minutes for taxpayers to prepare, copy and electronically file a 1040 tax form. This distribution of times follows the normal distribution and the standard deviation is 80 minutes.
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