# Question: Although most people are aware of minor dehydration symptoms such

Although most people are aware of minor dehydration symptoms such as dry skin and headaches, many are less knowledgeable about the causes of dehydration. According to a poll done for the Nutrition Information Center, the results of a random sample of 3003 American adults showed that 20% did not know that caffeine dehydrates. The survey listed a margin of error of plus or minus 1.8%.

a. Describe how this survey of 3003 American adults fits the properties of a binomial experiment. Specifically identify n, a trial, success, p, and x.

b. What is the point estimate for the proportion of all Americans who did not know that caffeine dehydrates? Is it a parameter or a statistic?

c. Calculate the 95% confidence maximum error of estimate for a binomial experiment of 3003 trials that result in an observed proportion of 0.20.

d. How is the maximum error, found in part c, related to the 1.8% margin of error quoted in the survey report?

e. Find the 95% confidence interval for the true proportion p based on a binomial experiment of 3003 trials that results in an observed proportion of 0.20.

a. Describe how this survey of 3003 American adults fits the properties of a binomial experiment. Specifically identify n, a trial, success, p, and x.

b. What is the point estimate for the proportion of all Americans who did not know that caffeine dehydrates? Is it a parameter or a statistic?

c. Calculate the 95% confidence maximum error of estimate for a binomial experiment of 3003 trials that result in an observed proportion of 0.20.

d. How is the maximum error, found in part c, related to the 1.8% margin of error quoted in the survey report?

e. Find the 95% confidence interval for the true proportion p based on a binomial experiment of 3003 trials that results in an observed proportion of 0.20.

## Answer to relevant Questions

A bank randomly selected 250 checking account customers and found that 110 of them also had savings accounts at the same bank. Construct a 95% confidence interval for the true proportion of checking account customers who ...Find these critical values using Table 6 in Appendix B: a. t(21, 0.95) b. t(26, 0.975) c. t(27, 0.99) d. t(60, 0.025) When a single die is rolled, the probability of a one is 1/6, or 0.167. Let’s simulate 3000 rolls of a die. a. Use the commands given in Exercise 9.85 and a calculator or computer to simulate the rolling of a single die ...State the null hypothesis, Ho, and the alternative hypothesis, Ha, that would be used to test these claims: a. More than 60% of all students at our college work part-time jobs during the academic year. b. No more than ...PC users are often victimized by hardware problems. A study revealed that hardware problems reported to manufacturers could not be fixed by one in three owners of personal computers. Home PC owners fared even worse than ...Post your question