In a cooking contest, the mean score for taste was 20, with a standard deviation of 2.8. One of the contestants received a score of 14. Convert this score to a z score and tell if it is "usual" or "unusual."

Question

2 April, 23:22

+1

Answers (2)

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Jaylynn Blair · Answer 1

Z score = n - mu / d where mu = mean and d = std dev.

for n = 14 we hav ez score of (14-20) / 2.8 = - 2.143

unusual as he is in the bottom 5%

Jadyn Wolfe · Answer 2

Jadyn Wolfe 2 April, 23:33

0

The answer is - 2.14; unusual