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Question Help According to a certain organization, adults worked an average of 1.715 hours last year....
According to a certain organization, adults worked an average of 1,792 hours last year. Assume the...
According to a certain organization, adults worked an average of 1,792 hours last year. Assume the population standard deviation is 410 hours and that a random sample of 50 adults was selected. Complete parts a through e below. O = 57.98 (Round to two decimal places as needed.) b. What is the probability that the sample mean will be more than 1,820 hours? P(X>1,820) = .3146 (Round to four decimal places as needed.) c. What is the probability that the...
) According to a certain survey, adults spend 2.252.25 hours per day watching television on a...
) According to a certain survey, adults spend 2.252.25 hours per day watching television on a weekday. Assume that the standard deviation for "time spent watching television on a weekday" is 1.931.93 hours. If a random sample of 6060 adults is obtained, describe the sampling distribution of x overbarx, the mean amount of time spent watching television on a weekday. x overbarx is approximately normal with mu Subscript x overbarμxequals= 2.25 and sigma Subscript x overbarσxequals=0.2491620.249162 . (Round to six...
According to a research institution, the average hotel price in a certain year was $105.12. Assume...
According to a research institution, the average hotel price in a certain year was $105.12. Assume the population standard deviation is $20.00 and that a random sample of 32 hotels was selected. Complete parts a through d below. a. Calculate the standard error of the mean. (Round to two decimal places as needed.) b. What is the probability that the sample mean will be less than $106? P(x<$106) (Round to four decimal places as needed.) c. What is the probability...
According to a research institution, the average hotel price in a certain year was $100 21...
According to a research institution, the average hotel price in a certain year was $100 21 Assume the population standard deviation is $17 00 and that a random sample of 4 hotels was selected Complete parts a through d befow a, calculate the standard error of the mean Round to two decimal places as needed ) b. What is the probability that the sample mean will be less than $1027 X < $102) : (Round to four decimal places as...
According to a recent poll, 29% of adults in a certain area have high levels of...
According to a recent poll, 29% of adults in a certain area have high levels of cholesterol. They report that such elevated levels 'could be financially devastating to the regions healthcare system and are a major concern to health insurance providers. Assume the standard deviation from the recent studies is accurate and known. According to recent studies, cholesterol levels in healthy adults from the area average about 206 mg/dL, with a standard deviation of about 25 mg/dL, and are roughly...
According to a research institution, the average hotel price in a certain year was $97.27. Assume...
According to a research institution, the average hotel price in a certain year was $97.27. Assume the population standard deviation is $23.00 and that a random sample of 43 hotels was selected. Complete parts a through d below. a. Calculate the standard error of the mean. out - = $ 3.51 (Round to two decimal places as needed.) b. What is the probability that the sample mean will be less than $99? P[<<$99) = (Round to four decimal places as...
According to Nielsen Media Research, the average number of hours of TV viewing by adults (18...
According to Nielsen Media Research, the average number of hours of TV viewing by adults (18 and over) per week in the United States is 36.07 hours. Suppose the standard deviation is 9.7 hours and a random sample of 43 adults is taken. Appendix A Statistical Tables a. What is the probability that the sample average is more than 37 hours? b. What is the probability that the sample average is less than 36.5 hours? c. What is the probability...
According to a research institution, the average hotel price in a certain year was $91.76. Assume...
According to a research institution, the average hotel price in a certain year was $91.76. Assume the population standard deviation is $15.00 and that a random sample of 44 hotels was selected. Complete parts a through d below. a. Calculate the standard error of the mean. σx= (Round to two decimal places as needed.)
I need help with - (c) 95% of adults in this country worked between 38.7 hours...
I need help with - (c) 95% of adults in this country worked between 38.7 hours and 44.1 hours last week. - at the bottom - Thank you! In a survey, 1200 adults in a certain country were asked how many hours they worked in the previous week. Based on the results, a 95% confidence interval for mean number of hours worked was lower bound: 38.7 and upper bound: 44.1. Which of the following represents a reasonable interpretation of the...
According to a recent poll, 27% of adults in a certain area have high levels of...
According to a recent poll, 27% of adults in a certain area have high levels of cholesterol. They report that such elevated levels "could be financially devastating to the regions healthcare system" and are a major concern to health insurance providers. Assume the standard deviation from the recent studies is accurate and known. According to recent studies, cholesterol levels in healthy adults from the area average about 205mg/dL, with a standard deviation of about 30mg/dL, and are roughly Normally distributed....
According to a certain organization, adults worked an average of 1,792 hours last year. Assume the population standard deviation is 410 hours and that a random sample of 50 adults was selected. Complete parts a through e below. O = 57.98 (Round to two decimal places as needed.) b. What is the probability that the sample mean will be more than 1,820 hours? P(X>1,820) = .3146 (Round to four decimal places as needed.) c. What is the probability that the...
According to a research institution, the average hotel price in a certain year was $105.12. Assume the population standard deviation is $20.00 and that a random sample of 32 hotels was selected. Complete parts a through d below. a. Calculate the standard error of the mean. (Round to two decimal places as needed.) b. What is the probability that the sample mean will be less than $106? P(x<$106) (Round to four decimal places as needed.) c. What is the probability...
According to a research institution, the average hotel price in a certain year was $100 21 Assume the population standard deviation is $17 00 and that a random sample of 4 hotels was selected Complete parts a through d befow a, calculate the standard error of the mean Round to two decimal places as needed ) b. What is the probability that the sample mean will be less than $1027 X < $102) : (Round to four decimal places as...
According to a recent poll, 29% of adults in a certain area have high levels of cholesterol. They report that such elevated levels 'could be financially devastating to the regions healthcare system and are a major concern to health insurance providers. Assume the standard deviation from the recent studies is accurate and known. According to recent studies, cholesterol levels in healthy adults from the area average about 206 mg/dL, with a standard deviation of about 25 mg/dL, and are roughly...
According to a research institution, the average hotel price in a certain year was $97.27. Assume the population standard deviation is $23.00 and that a random sample of 43 hotels was selected. Complete parts a through d below. a. Calculate the standard error of the mean. out - = $ 3.51 (Round to two decimal places as needed.) b. What is the probability that the sample mean will be less than $99? P[<<$99) = (Round to four decimal places as...
According to Nielsen Media Research, the average number of hours of TV viewing by adults (18 and over) per week in the United States is 36.07 hours. Suppose the standard deviation is 9.7 hours and a random sample of 43 adults is taken. Appendix A Statistical Tables a. What is the probability that the sample average is more than 37 hours? b. What is the probability that the sample average is less than 36.5 hours? c. What is the probability...
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