A sample of size 126 will be drawn from a population with mean 26 and standard deviation 3. Use the TI-84 calculator. Part 1 of 2 Find the probability that x will be more than 25. Round the answer to at least four decimal places. The probability that x will be more than 25 is Part 2 of 2 Find the $5" percentile of x. Round the answer to two decimal places. The 35" percentile isA sample of size 115 will be drawn from a population with mean 48 and standard deviation 12. Use the TI-84 calculator. Part 1 of 2 Find the probability that x will be between 45 and 50. Round the answer to four decimal places. The probability that x will be between 45 and 50 is Part 2 of 2 Find the 90" percentile of x. Round the answer to two decimal places. The 90th percentile isA sample of size 126 will be drawn from a population with mean 26 and standard deviation 3. Use the TI-84 calculator. Part 1 of 2 Find the probability that x will be between 25 and 27. Round the answer to four decimal places. The probability that x will be between 25 and 27 is Part 2 of 2 Find the 55" percentile of x. Round the answer to two decimal places. The 55" percentile isWatd: your dioiesterol: The mean serum cholesterol level for U.S. adults was 19?, with a slantiard deviation of 33 {le units are milligrams per deciliter}. A\" simple random sample of 1'35 adults is d'iosen. Use the 1184 calculator. Round the answers to four decimal places. What is ne probabilityr that me sample mean cholesterol level is greater man 206'? The probability that the sample' mean cholesterol level is greater than 206 is E] . What is theprobalnilcit'yir that the sample mean cholesterol level is between 133 and 195'? Theprobability that the sample mean cholesterol level is between 183 and 195 is [:l. Would it tie-unusual for the sample mean to be less than 1'92? It |(Choose one] 1' I be unusual for the'sample mean'to be less than 191 since the probability is D. Taxes: The Internal Revenue Service reports that the mean federal income tax paid in the year 2010 was $8040. Assume that the standard deviation is $4300. The IRS plans to draw a sample of 1000 tax returns to study the effect of a new tax law. Part 1 of 5 (=) What is the probability that the sample mean tax is less than $7800? Round the answer to at least four decimal places. The probability that the sample mean tax is less than $7800 is Part 2 of 5 (b) What is the probability that the sample mean tax is between $7400 and $7900? Round the answer to at least four decimal places. The probability that the sample mean tax is between $7400 and $7900 is Part 3 of 5 (c) Find the 10" percentile of the sample mean. Round the answer to at least two decimal places. The 10" percentile of the sample mean is $ Part 4 of 5 (d) Would it be unusual if the sample mean were less then $7600? Round answer to at least four decimal places. It (Choose one) v unusual because the probability of the sample mean being less than $7600 is. Part 5 of 5 (e) Do you think it would be unusual for an individual to pay a tax of less than $7600? Explain. Assume the variable is normally distributed. Round the answer to at least four decimal places. (Choose one) v , because the probability that an individual to pays a tax less than $ 7600 isHigh-rent district: The mean monthly rent for a one-bedroom apartment without a doorman in Manhattan is $2663, Assume the standard deviation is $306. A real estate firm samples 106 apartments. Use the TI-84 Plus calculator. Part 1 of 5 (e) What is the probability that the sample mean rent is greater than $2733? Round the answer to at least four decimal places. The probability that the sample mean rent is greater than $2733 is Part 2 of 5 (b) What is the probability that the sample mean rent is between $2500 and $2575? Round the answer to at least four decimal places. The probability that the sample mean rent is between $2500 and $2575 is Part 3 of 5 (c) Find the 90" percentile of the sample mean. Round the answer to at least two decimal places. The 90percentile of the sample mean rent is $ Part 4 of 5 (d) Would it be unusual if the sample mean were greater than $2690? Round answer to at least four decimal places. (Choose one) w , because the probability that the sample mean is greater than $2690 is Part 5 of 5 (e) Do you think it would be unusual for an individual to have a rent greater then $2690? Explain. Assume the variable is normally distributed. Round the answer to at least four decimal places. (Choose one) , because the probability that an apartment has a rent greater than $2690 isAnnual income: The mean annual income for people in a certain city (in thousands of dollars) is 41, with a standard deviation of 26. A pollster draws a sample of 91 people to interview. Part 1 of 5 (=) What is the probability that the sample mean income is less than 38? Round the answer to at least four decimal places. The probability that the sample mean income is less than 38 is Part 2 of 5 (b) What is the probability that the sample mean income is between 38 and 44? Round the answer to at least four decimal places. The probability that the sample mean income is between 38 and 44 is. Part 3 of 5 (c) Find the 20" percentile of the sample mean. Round the answer to at least one decimal place. The 20" percentile of the sample mean is Part 4 of 5 (d) Would it be unusual for the sample mean to be less than 38? Round the answer to at least four decimal places. It (Choose one) w unusual because the probability of the sample mean being less than 38 is Part 5 of 5 (e) Do you think it would be unusual for an individual to have an income of less than 38? Explain. Assume the variable is normally distributed. Round the answer to at least four decimal places. (Choose one) v , because the probability that an individual has an income less than 38 is
