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The average number of units that the factory workers at Shilo Company assemble per week is µ = 45 with a standard deviation of s = 12. Assume that the distribution of units assembled is normal. If a sample n = 25 were drawn from all of the workers,
a. What range of units manufactured by this sample would contain the sample mean 90% of the time? (Hint: Find the middle 90% of the distribution of sample means.)
b. What is the probability that the sample mean will be between 40 and 50 units?
c. Is it reasonable for this sample to produce an average of 48 units per week, or is this mean very different from what would be normally expected?
d. How likely is it that this sample will produce more than an average of 55 units?
A standard deviation of 68. a score is considered outstanding if it is at least 420. what is the % of the scores would be outstanding?
a. Find the least-squares regression line of y on x. b. Estimate the blood pressure of a person whose age is 45 years.
Swanson's Bakery is well known for producing the best fresh bread in the city, so the sales are very substantial. The daily demand for its fresh bread has a uniform distribution between 300 and 600 loaves.
Find the premium if the same income is to be paid monthly instead of annually, assuming payments are made (a) at the beginning of each month, (b) at the end of each month.
judgmental forecasting and managerial issuesgive a scenario preferably related to your area of expertise or work
Suppose you draw two cards from a standard deck of 52 cards without replacing the first one before drawing the second. Find the probability that the first card is a king and that the second card is an ace?
perform hypothesis tests. please label the test statistic you found t value z value or chi square and the value. for
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If Alex company produce next year apples, it needs to store with additional cost of $.10. Formulate the problem for linear equation with min cost and opt production.
Do outliers increase or decrease the magnitude of correlation coefficients?- What impact does reliability have on correlation?
These data are presented below. Should the manager be given an increase in staff? Why or why not? Please show your work.
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