The Manitoba Tourism Board plans to sample information centre visitors entering the province to learn the fraction of visitors who plan to camp in the province. Current estimates are that 35% of visitors are campers. How large a sample would you take to estimate at a 90% confidence level the population proportion with an allowable error of 8%? (Do not round the intermediate calculations. Round the final answer to the nearest whole number.) Sample sizeYou plan to conduct a survey to find what proportion of the workforce has two or more jobs. You decide on the 90% confidence level and state that the estimated proportion must be within 2% of the population proportion. A pilot survey reveals that 19 of the 50 sampled hold two or more jobs. How many in the workforce should be interviewed to meet your requirements? (Round the intermediate calculations to 2 decimal places. Round the final answer to nearest whole number.) Number of persons to be interviewedWe want to estimate the population mean within 6, with a 80% level of confidence. The population standard deviation is estimated to be 15. How large a sample is required? (Round the intermediate calculation to 2 decimal places. Round the final answer to the nearest whole number.) Sample sizeYou need to estimate the mean number oftravel days per year for outside salespeople. The mean of a small pilot study was 150 days, with a standard deviation of 17 days. If you must estimate the population mean within 2 days, how many outside salespeople should you sample? Use the 9 '36 condence level. {Round the intermediate calculation to 3 decimal places. Round the final answer to the nearest whole number.) Number of outside salespeople |:|