This cannot be determined from the information given Question 5 1 1 point Which

This cannot be determined from the information given

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This cannot be determined from the information given. Question 5 1 / 1 point Which of the following results implies that the spread in x ¯ x¯ {"version":"1.1","math":"\bar x"} decreases as the sample size increases? Question options: The normal distribution. The 68-95-99.7% Rule. The Central Limit Theorem. The Law of Large Numbers. Information Use the following information to answer the next 4 questions. Scores on the quantitative portion of the GRE are approximately normally distributed with mean μ =150.8 μ=150.8 {"version":"1.1","math":"\mu = 150.8 "} and standard deviation σ =8.8 σ=8.8 {"version":"1.1","math":"\sigma = 8.8"} . (1) (1) Source: ets:GRE
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Question 6 1 / 1 point Dianne earned a score of 160 on the quantitative portion of the GRE. What is the z-score corresponding to Dianne’s score? (Round your answer to 3 decimal places. Example: If the answer is 0.8976 then you would enter 0.898 in the answer box.) Answer: 1.045 View Feedback z = (x - μ)/σ= (160 - 150.8)/8.8 = 1.04545 Question 7 1 / 1 point What is the probability that a randomly selected student will score above 160 on the quantitative portion of the GRE? (Round your answer to 3 decimal places. Example: If the answer is 0.8976 then you would enter 0.898 in the answer box.) Answer: 0.148 Question 8 1 / 1 point A random sample of 5 students was selected to take the GRE. Their scores are: 160, 175, 163, 149, 153 What is the z-score corresponding to the sample mean of these students’ scores? (Round your answer to 3 decimal places. Example: If the answer is 0.8976 then you would enter 0.898 in the answer box.) Answer: 2.338 Question 9 1 / 1 point What is the probability that five randomly selected students will have a mean score that is greater than the mean achieved by the students in the previous problem? (Round your answer to 4 decimal places.
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