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SAT scores: Assume that in a given year the mean mathematics SAT score was 522, and the standard deviation was 116 . A sample of 66 scores is chosen. Use the TI-84 Plus calculator.
Part 1 of 5 (a) What is the probability that the sample mean score is less than 509? Round the answer to at least four decimal places.
The probability that the sample mean score is less than 509 is $0.1841{ }^{\text {® }}$.
Correct Answer:
The probability that the sample mean score is less than 509 is 0.1813 .
Part: $1 / 5$
Part 2 of 5 (b) What is the probability that the sample mean score is between 486 and 525? Round the answer to at least four decimal places.
The probability that the sample mean score is between 486 and 525 is $\square$ Skip Part Check Save For Later Submit Assignment (c) 2024 McGraw Hill LLC. All Rights Reserved.Terms of Use I Privacy Center I Accessibility