According to a research institution, men spent an average of $134.08 on Valentine's Day gifts in 2009. Assume the standard deviation for this population is $45 and that it is normally distributed. A random sample of 10 men who celebrate Valentine's Day was selected. Complete parts a through e. 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 $130? P(x<$130)= (Round o four decimal places as needed.) c. What is the probability that the sample mean will be more than $145? D P(x>$145) = (Round to four decimal places as needed.) d. What is the probability that the sample mean will be between $110 and $165? GITE P ($110sxs $165) = (Round to four decimal places as needed.) e. Identify the symmetrical interval that includes 95% of the sample means if the true population mean is $134.08. $sxss (Round to the nearest dollar as needed.)

According to a research institution, men spent an average of $134.08 on Valentine's Day gifts in 2009. Assume the standard deviation for this population is $45 and that it is normally distributed. A random sample of 10 men who celebrate Valentine's Day was selected. Complete parts a through e. 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 $130? P(x<$130)= (Round o four decimal places as needed.) c. What is the probability that the sample mean will be more than $145? D P(x>$145) = (Round to four decimal places as needed.) d. What is the probability that the sample mean will be between $110 and $165? GITE P ($110sxs $165) = (Round to four decimal places as needed.) e. Identify the symmetrical interval that includes 95% of the sample means if the true population mean is $134.08. $sxss (Round to the nearest dollar as needed.)

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018

18th Edition

ISBN:9780079039897

Author:Carter

Publisher:Carter

Chapter10: Statistics

Section10.4: Distributions Of Data

Problem 19PFA

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