$157 $132 $109 $145 $125 $139
A). Calculate and s for the expense data. In addition, show that the two different formulas
for calculating s 2 give the same result.
B). Assuming that the distribution of entertainment expenses is approximately normally distributed, calculate estimates of tolerance intervals containing 68.26 percent, 95.44 percent, and 99.73 percent of all entertainment expenses by the sales force.
C). If a member of the sales force submits an entertainment expense (dinner cost for four) of $190, should this expense be considered unusually high (and possibly worthy of investigation by the company)? Explain your answer.
D). Compute and interpret the z-score for each of the six entertainment expenses.
Recently Asked Questions
- How to calculate the change in volume of a sealed balloon using the ideal gas law pv = nrt?
- A 3-member committee must elect one of four candidates: R, S, T, or W. The winner is to be selected via the Borda count method and the chair will have tie
- A company has undertaken a feasibility study (which cost $20,000) to evaluate the viability of starting up operations overseas. The net present value of