Compute the probability the sample mean
Normal population has a mean of 75 and a standard deviation of 5. You select a sample of 40. Compute the probability the sample mean is:
A. Less than 74
b. between 74 and 76
c. between 76 and 77
d. Greater than 77
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Find how much total manufacturing overhead costs? Determine how much total inventoriable product costs? Compute costs of total prime?
Throughout October the average temperature of Whitman Lake is 53.2 and standard deviation is 2.3. Suppose the variable is normally distributed. For randomly chosen day in October, determine the probability that the temperature will be as follows
Determine the decision rule? Calculate SST, SSE, and SS totals. Calculate an ANOVA table. Describe your decision regarding the null hypothesis.
150,000 direct labor hours would be worked. How much manufacturing overhead was overallocated or underallocated for year?
In doing market research for candy company, John find that 1053 of 1220 randomly chosen person like dark chocolate. Based this result, find a 90% lower bound estimate of the percentage of all people who like dark chocolate.
An aircraft manufacturer requires to buy aluminum sheets with an average thickness of 0.05 inch. The manufacturer knows that significantly thinner sheets would be unsafe and considerably thicker sheets would be too heavy.
Given sample outcome, find a 95% confidence interval for the relevant population proportion. Does this interval estimate suggest that there has been a change in the proportion of students who graduate within four years? Why or why not?
A service center comprises two servers, each working at the exponential rate of two services per hour. If customers arrive at Poisson rate of three per hour, then, supposing a system capacity of at most three customers,
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