icantspeakengles
11.06.2021 •
Mathematics
The board of examiners that administers the real estate broker’s examination in a certain state found that the mean score on the test was 546 and the standard deviation was 72. If the board wants to set the passing score so that only the best 10% of all applicants pass, what is the passing score, to the nearest hundredth? Assume that the scores are normally distributed.
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Ответ:
Step-by-step explanation:
90% mark from z-score table is:
z = 1.28We have also:
μ = 546 and σ = 72According formula for z-score:
z = (x - μ)/σSubstitute values and solve for x:
1.28 = (x - 546)/72x - 546 = 1.28*72x - 546 = 92.16x = 92.16 + 546x = 638.16Ответ:
i need the answer
Step-by-step explanation: