5. When 899 male workers were asked how many hours they worked in the previous week, the mean was 45.2 with a standard deviation of 14.5. Does this suggest that the population mean work week for men is significantly different than 40 hours? Use the Inference for a Population Mean web app² to complete parts a through d. a. Identify the relevant variable and parameter. First, identify the relevant variable. Choose the correct answer below. OA. The number of hours worked in the previous week by all workers OB. The maximum number of hours worked in a week OC. The number of hours worked in the previous week by male workers OD. The proportion of male workers that worked more than 40 hours in the previous week OE. The population mean work week (in hours) for men Now identify the parameter for this situation. Choose the correct parameter below. OA. The number of hours worked in the previous week by all workers. OB. The proportion of male workers that worked more than 40 hours in the previous week C. The population mean work week (in hours) for men D. The maximum number of hours worked in a week O E. The number of hours worked in the previous week by male workers b. State the null and alternative hypotheses. Ho: H(1). Ha: H (2). (Type integers or decimals. Do not round.)

The governor of a state wanted to assess the public education system of the state. She instructed a group of researchers to create a test to assess the knowledge of every high school senior in the state. The researchers administered the tests and found that the average score was 74 points out of 100, with a standard deviation of 20 points. Complete parts (a) through (c) below. a. Identify the population and variable. Choose the correct population below. A. The population is the group of all high school seniors in the state. O B. The population is the group of every state's governor. O C. The population is the group of all high school teachers in the state. O D. The population is the group of all high school students in the state. Choose the correct variable below. O A. The variable is the number of high school seniors. O B. The variable is the test length. YC. The variable is the test score. O D. The variable is the number of high school students. b. For samples of size 225, find the…

In the 1992 presidential election, Alaska's 40 election districts averaged 2002 votes per district for President Clinton. The standard deviation was 589. (There are only 40 election districts in Alaska.) The distribution of the votes per district for President Clinton was bell-shaped. Let X = number of votes for President Clinton for an election district. (Source: The World Almanac and Book of Facts) Round all answers except part e. to 4 decimal places. a. What is the distribution of X? X N b. Is 2002 a population mean or a sample mean? Select an answer ✓ c. Find the probability that a randomly selected district had fewer than 2058 votes for President Clinton. d. Find the probability that a randomly selected district had between 1998 and 2225 votes for President Clinton. e. Find the third quartile for votes for President Clinton. Round your answer to the nearest whole number.

Please find the range, sample standard deviation, and interquartile range (IQR) of the following data set. 23 30 37 53 62 range sample standard deviation IQR = = 88 93 95 95 98 (Please enter an exact answer.) (Please show your answer to one decimal place.) (Please enter an exact answer.)