Asked by luckybee
sample standard deviation = 3
sample mean = 68
n=30
what is the probability that one student selected at random from the sample will have a height within one sample standard deviation of the sample mean?
a. 1.00
b. 0.73
c. 0.57
d. 0.23
sample mean = 68
n=30
what is the probability that one student selected at random from the sample will have a height within one sample standard deviation of the sample mean?
a. 1.00
b. 0.73
c. 0.57
d. 0.23
Answers
Answered by
PsyDAG
mean ± 1 SD = 68.26%
This is true for any normal distribution. Is there something you are not telling me?
This is true for any normal distribution. Is there something you are not telling me?
Answered by
luckybee
There is a picture of a histogram. the numbers on the x-axis are: 62, 63, 64, 65, 66, 67, 68, 69, 70, 71, 72, 73, 74, 75, and 76. the numbers on the t-axis are: 1, 2, 3, 4, 5, 6, 7, 8, 9, 10. there are additional symbols: sigma x =2100, sigma x^2=142540, and Sx=3
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