# Question

a. The probability of success on any trial of a binomial experiment is 25%. Find the probability that the proportion of successes in a sample of 500 is less than 22%.

b. Repeat part (a) with n = 800.

c. Repeat part (a) with n = 1,000.

b. Repeat part (a) with n = 800.

c. Repeat part (a) with n = 1,000.

## Answer to relevant Questions

Determine the probability that in a sample of 100 the sample proportion is less than .75 if p = .80.The manager of a restaurant in a commercial building has determined that the proportion of customers who drink tea is 14%. What is the probability that in the next 100 customers at least 10% will be tea drinkers?Independent random samples of 10 observations each are drawn from normal populations. The parameters of these populations arePopulation 1: µ = 280, σ = 25Population 2: µ = 270, σ = 30Find the probability that the mean of ...The manager of a restaurant believes that waiters and waitresses who introduce themselves by telling customers their names will get larger tips than those who don’t. In fact, she claims that the average tip for the former ...The following observations are the ages of a random sample of 8 men in a bar. It is known that the ages are normally distributed with a standard deviation of 10. Determine the 95% confidence interval estimate of the ...Post your question

0