According to the American Dental Association, 60% of all dentists use nitrous oxide in their practice. In

Question:

According to the American Dental Association, 60% of all dentists use nitrous oxide in their practice. In a random sample of 75 dentists, let p̂ represent the proportion who use laughing gas in their practice.

a. Find E(p̂).

b. Find σ p̂.

c. Describe the shape of the sampling distribution of p̂.

d. Find P(p̂ > .70).

Distribution
The word "distribution" has several meanings in the financial world, most of them pertaining to the payment of assets from a fund, account, or individual security to an investor or beneficiary. Retirement account distributions are among the most...