# Question

According to a USA Today “Snapshot,” 20% of adults surveyed do their most creative thinking while driving. You conduct a survey of 250 adults and ﬁnd that 30 do their most creative thinking while driving.

(a) Compute the probability that, in a random sample of 250 adults, 30 or fewer do their most creative thinking while driving.

(b) Does this result contradict the USA Today “Snapshot”? Explain.

(a) Compute the probability that, in a random sample of 250 adults, 30 or fewer do their most creative thinking while driving.

(b) Does this result contradict the USA Today “Snapshot”? Explain.

## Answer to relevant Questions

A continuous random variable X is uniformly distributed with 0 ≤ X ≤ 20. (a) Draw a graph of the uniform density function. (b) What is P(0 ≤ X ≤ 5)? (c) What is P(10 ≤ X ≤ 18)? Find the value of z0.04. Imagine that a friend of yours is always late. Let the random variable X represent the time from when you are supposed to meet your friend until he shows up. Suppose your friend could be on time (x = 0) or up to 30 minutes ...Draw a normal curve with µ = 30 and σ = 10. Label the mean and the inﬂection points. The following frequency distribution represents the heights (in inches) of 80 randomly selected 5-year-old females. (a) Use MINITAB or some other statistical software to construct a relative frequency histogram. Comment on ...Post your question

0