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A random sample of n = 64 observations is drawn from the population with mean equal to 20 and standard deviation equal to 16. a. Give mean and standard deviation of (repeated) sampling distribution of x. b. Explain the shape of sampling distribution of x. Does the answer depend on sample size? C. Compute standard normal z-score corresponding to value of x = 16. d. Compute standard normal z-score corresponding to value of x = 23. e. Determine P(x < 16). F. Determine P(x > 23). G. Determine P(16 < x < 23).
Which conditional distributions do these statistics refer to, those of y at given catagories of x, or those of x at given categories of y? Set up a table with race of murderers as rows and race of victims as columns, showing the two conditional di..
In the data collected for construction of c chart, the average number of defects per unit of output is c = 7.5. Discuss the 3-sigma upper and lower control limits for the control chart?
What percent of the Fords traveled 62.000 miles or less during the year?
A frequency distribution was developed. The lower endpoint of the first class is 9.30, and the midpoint is 9.35. what is the upper endpoint of this class?
The following data were collected as part of a study of coffee consumption among male and female undergraduate students. The following reflects cups per day consumed:
Suppose these data represent whole population. Determine the population mean and population standard deviation.
Add line-of-best fit (trend line/linear regression line) to your scatterplot. Write down the equation of the trend line below.
Solve different inventory control problems using an appropriate OR method.
What is the probability that at least one of the 40 shuttle missions scheduled over the next 5 years results in a critical-item failure?
Suppose that an executive of a venture capital investment firm is trying to decide how to allocate his funds among three different projects, each of which requires a $100,000 investment.
A large bakery buys flour in 25-pound bags. The bakery uses an average of 4,860 bags a year. Preparing an order and receiving a shipment of flour involves a cost of $10 per order. Annual carrying costs are $75 per bag.
Events A and B are mutually exclusive events defined on common sample space. If P (A) 0.5 and P (A or B) = 0.70, determine P (B).
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