Question 1041477: Out of this date, whats the range of values that are within 1 standard deviation of the mean. Round to the nearest tenth.
(338, 160, 210, 180, 166, 272, 128, 409, 240, 250, 160, 300, 340, 200, 194, 132, 202, 180, 420, 380, 325, 185, 233, 198)
A.) 241.8 - 328.4
B.) 155.2 - 241.8
C.) 155.2 - 328.4
D.) 328.4 - 415
Answer by jim_thompson5910(35256)   (Show Source):
You can put this solution on YOUR website! Using a calculator,
mean = xbar = 241.75
standard deviation = s = 86.6
lower bound = xbar - s = 241.75-86.6 = 155.15 which rounds to 155.2
upper bound = xbar + s = 241.75+86.6 = 328.35 which rounds to 328.4
So the answer is choice C
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