Explain will interval increase-decrease or stay the same

Reference no: EM13133247

The NCAA reported that the mean number of hours spent per week on coaching and recruiting by college football assistant coaches during the season was 70. A random sample of 50 assistant coaches showed the sample mean to be 68.6 hours, with a standard deviation of 8.2 hours.
a) Using the sample data, construct a 99% confidence interval for the population mean.

b) Does the 99% confidence interval include the value suggested by the NCAA?

c) Suppose you decide to switch from a 99 to a 95% confidence interval. Without performing any calculations, will the interval increase, decrease or stay the same? Which of the values in the formula will change?

Reference no: EM13133247

Questions Cloud

Partnership paid office expenses : Kaylyn is a 40% partner in the KKM Partnership. During the current year, KKM reported gross receipts of $160,000 and a charitable contribution of $10,000. The partnership paid office expenses of $100,000. In addition, KKM distributed $10,000 each ..

Explaining molecular forces : Desribing molecular forces of C5H6O, CH2=CH-CH=CH-CH=O, THREE double bonds. We are asked to describe the bond and angle terms of this structure.

What is barbara basis in the property for the sale : A gift tax of $2,800 was paid by the aunt. Barbara sold the stock in the following year for $29,000. What is Barbara’s basis in the property for the sale.

What controls must have been lacking at white electric : What the bookkeeper did was definitely unethical. But what if one of her grandchildren had been ill and needed an expensive operation? If this had been the case, would it have been ethical for her to take company funds to pay for the operation if ..

Explain will interval increase-decrease or stay the same : Without performing any calculations, will the interval increase, decrease or stay the same? Which of the values in the formula will change?

What arguments would brian jones manager of the mining : What arguments would brian jones, manager of the mining division, make to support the transfer pricing method that he prefers.

Probability archer first bull-s-eye comes on third arrow : Assume each shot is independent of the others. If she shoots 6 arrows, what's the probability of each result described below. Her first bull's-eye comes on the third arrow.

Basis in the partnership interest at particular year : At the end of the year, Roger's share of partnership liabilities increased by $20,000. Roger's basis in the partnership interest at the end of the year is:

Explain construct an energy level diagram : We are asked to construct an energy level diagram (molecular orbital) for the molecule SO. We are then asked to comment on the ionic species of SO - bond order, bond distance etc. So far so good.

User Account

All Pages