# Question: A sample of 80 results in 30 successes a Calculate

A sample of 80 results in 30 successes.

a. Calculate the point estimate for the population proportion of successes.

b. Construct 90% and 99% confidence intervals for the population proportion.

c. Can we conclude at 90% confidence that the population proportion differs from 0.5?

d. Can we conclude at 99% confidence that the population proportion differs from 0.5?

a. Calculate the point estimate for the population proportion of successes.

b. Construct 90% and 99% confidence intervals for the population proportion.

c. Can we conclude at 90% confidence that the population proportion differs from 0.5?

d. Can we conclude at 99% confidence that the population proportion differs from 0.5?

**View Solution:**## Answer to relevant Questions

In a sample of 30 observations the number of successes equals 18.a. Construct the 88% confidence interval for the population proportion of successes.b. Construct the 98% confidence interval for the population proportion of ...In a recent poll of 760 homeowners in the United States, one in five homeowners reports having a home equity loan that he or she is currently paying of. Using a confidence coefficient of 0.90, derive an interval estimate for ...The lowest and highest observations in a population are 20 and 80, respectively. What is the minimum sample size n required to estimate µ with 80% confidence if the desired margin of error is E = 2.6 ? What happens to n if ...A survey by the AARP (Money, June 2007) reported that approximately 70% of people in the 50 to 64 age bracket have tried some type of alternative therapy (for instance, acupuncture or the use of nutrition supplements). ...A Realtor wants to estimate the mean price of houses in Mission Viejo, California. She collects a sample of 36 recent house sales, a portion of which is shown in the accompanying table; the complete data set, labeled ...Post your question