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Vesnalui [34]
2 years ago
7

Scores on a test have a mean of 66 and Q3 is 80. The scores have a distribution that is approximately normal. Find the standard

deviation. Round your answer to the nearest tenth.
A) 10.5
B) 20.9
C) 9.4
D) 18.7
Mathematics
1 answer:
Troyanec [42]2 years ago
6 0
The correct answer is B
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Ratling [72]

Answer:

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Step-by-step explanation:

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3 years ago
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sorry if wrong have a good day/night

may i please have a branllest

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