For this problem, carry at least four digits after the decimal in your calculations. Answers may vary slightly due to rounding. In a random sample of 70 professional actors, it was found that 38 were extroverts. l USE SALT (a) Let p represent the proportion of all actors who are extroverts. Find point estimates for p and q. (Round your answer to four decimal places.) 13 = E x 6 = E x (b) Find a 95% condence interval for p. Find the maximal margin of error. (Round your answer to two decimal places.) .=_., Report the bounds from the 95% condence interval for p. (Round your answers to two decimal places.) E E lower limit upper limit For this problem, carry at least four digits after the decimal in your calculations. Answers may vary slightly due to rounding. In a random sample of 506 judges, it was found that 279 were introverts. l USE SALT (a) Let ,0 represent the proportion of all judges who are introverts. Find a point estimate for ,0. (Round your answer to four decimal places.) E (b) Find a 99% condence interval for p. (Round your answers to two decimal places.) E E lower limit upper limit For this problem, carry at least four digits after the decimal in your calculations. Answers may vary slightly due to rounding. Santa Fe black-on-white is a type of pottery commonly found at archaeological excavations at a certain monument. At one excavation site a sample of 596 potsherds was found, of which 361 were identied as Santa Fe black-on-white. l USE SALT (a) Let p represent the proportion of Santa Fe black-on-white potsherds at the excavation site. Find a point estimate for p. (Round your answer to four decimal places.) E 0:) Find a 95% condence interval for p. (Round your answers to three decimal places.) lower limit E E upper limit For this problem, carry at least four digits after the decimal in your calculations. Answers may vary slightly due to rounding. A random sample of 5,280 permanent dwellings on an entire reservation showed that 1,620 were traditional hogans. m use SALT (a) Let p be the proportion of all permanent dwellings on the entire reservation that are traditional hogans. Find a point estimate for ,0. (Round your answer to four decimal places.) E (ID) Find a 99% condence interval for p. (Round your answers to three decimal places.) lower limit E E upper limit For this problem, carry at least four digits after the decimal in your calculations. Answers may vary slightly due to rounding. Case studies showed that out of 10,426 convicts who escaped from certain prisons, only 7676 were recaptured. USE SALT (a) Letp represent the proportion of all escaped convicts who will eventually be recaptured. Find a point estimate for p. (Round your answer to four decimal places.) E (b) Find a 99% condence interval for p. (Round your answers to three decimal places.) lower limit E E upper limit For this problem, carry at least four digits after the decimal in your calculations. Answers may vary slightly due to rounding. A random sample of medical files is used to estimate the proportion p of all people who have blood type B. LO USE SALT (a) If you have no preliminary estimate for p, how many medical files should you include in a random sample in order to be 85% sure that the point estimate p will be within a distance of 0.04 from p? (Round your answer up to the nearest whole number.) medical files (b) Answer part (a) if you use the preliminary estimate that about 13 out of 90 people have blood type B. medical filesFor this problem, carry at least four digits after the decimal in your calculations. Answers may vary slightly due to rounding. How hard is it to reach a businessperson by phone? Letp be the proportion of calls to businesspeople for which the caller reaches the person being called on the rst try. I USE SALT (a) If you have no preliminary estimate for ,0, how many business phone calls should you include in a random sample to be 80% sure that the point estimate 13 will be within a distance of 0.03 from p? (Round your answer up to the nearest whole number.) E phone calls (b) A report states that businesspeople can be reached by a single phone call approximately 21% of the time. Using this (national) estimate for p, answer part (a). (Round your answer up to the nearest whole number.) E phone calls For this problem, carry at least four digits after the decimal in your calculations. Answers may vary slightly due to rounding. What percentage of your campus student body is female? Let p be the proportion of women students on your campus. m USE SALT (a) If no preliminary study is made to estimate p, how large a sample is needed to be 99% sure that a point estimate will be within a distance of 0.06 from p? (Round your answer up to the nearest whole number.) E m... (b) A report indicates that approximately 55% of college students are females. Answer part (a) using this estimate for p. (Round your answer up to the nearest whole number.) E students