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Question 1:
According the the U.S. Department of Education, full-time graduate students receive an average salary of $12,800. The dean of graduate studies at a large state university in PA claims that his graduate students earn more than this. He surveys 46 randomly selected students and finds their average salary is $13,445 with a standard deviation of $1800. With alpha = 0.05, is the dean’s claim correct?
Solution:
Question 2:
Z Transform Questions And Answers
A health researcher read that a 200-pound male can burn an average of 524 calories per hour playing tennis. 37 males were randomly selected and the mean number of calories burned per hour playing squash was 534.8 with a standard deviation of 45.9 calories. Do squash players burn more calories per hour than tennis players? Test with alpha = 0.01.
Solution:
Question 3:
To see if young men ages 8-17 years spend a different amount than the national average of $24.44 per shopping trip to a local mall, the manager surveyed 30 young men. She found that the average amount spent per trip was $23.37 with a standard deviation of $3.70. With alpha = 0.05, can it be concluded that 8-17 years old spend a different amount at the local mall than the national average?
Medicare Part A Questions And Answers
Solution: