QUESTION 7 The mean annual earning for U.S. workers with advanced degrees is $80,977 with a standard deviation of $100,895; the distribution is highly right-skewed. Use this information to answer...

Extracted text: QUESTION 7 The mean annual earning for U.S. workers with advanced degrees is $80,977 with a standard deviation of $100,895; the distribution is highly right-skewed. Use this information to answer questions 7 to 10 below. A random sample of n = 86 workers is drawn, and their annual earnings recorded. What is the expected value of the sample mean of their annual earnings? $100,895 $750,950 O $942 $80,977 QUESTION 8 What is the standard deviation of the sample mean of their annual earnings? $14 $100,895 $1,173 O $10,880 QUESTION 9 What is the probability that the sample mean is at least $100,000? 0.9598 O 1.0000 0.0000 0.0402 QUESTION 10 The actual sample mean earnings for the random sample of 86 workers with advanced degrees was $82,105. What is the sampling error? O S-8, 466 O $8, 466 O $1, 128 O S-1, 128