supermkimbrel
17.07.2019 •
Mathematics
Amandatory competency test for high school sophomores has a normal distribution with a mean of 400 and a standard deviation of 100. if the top 3% of students receive $500, find the minimum score you would need to receive this award.
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Ответ:
To solve for the minimum score required, we find for the z score value at P = 0.97 (top 3%). The z score is:
z = 1.88
Then we use the formula to find for X:
z = (X – u) / s
1.88 = (X – 400) / 100
X = 588
You have to score at least 588.
Ответ:
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