According to a Gallup poll, 46% of Americans 18 years old or older stated that they had

Question:

According to a Gallup poll, 46% of Americans 18 years old or older stated that they had read at least six books (ﬁction and nonﬁction) within the past year. You conduct a random sample of 250 Americans 18 years old or older.

(a) Verify that the conditions for using the normal distribution to approximate the binomial distribution are met.

(b) Approximate the probability that exactly 125 read at least six books within the past year. Interpret this result.

(d) Approximate the probability that at least 140 read at least six books within the past year. Interpret this result.

(e) Approximate the probability that between 100 and 120, inclusive, read at least six books within the past year. Interpret this result.

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...