Solve the problem.
-Scores on a test have a mean of 67 and $\mathrm { Q } _ { 3 }$ is 83. The scores have a distribution that is approximately normal. Find the standard deviation. Round your answer to the nearest tenth.
A) 21.3
B) 12
C) 10.7
D) 23.9

Question

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The Answer of Solve the problem.
-Scores on a test have a mean of 67 and $\mathrm { Q } _ { 3 }$ is 83. The scores have a distribution that is approximately normal. Find the standard deviation. Round your answer to the nearest tenth.
A) 21.3
B) 12
C) 10.7
D) 23.9

Solve the Problem Q3\mathrm { Q } _ { 3 }Q3​

Solve the Problem $\mathrm { Q } _ { 3 }$