x 15 20 25 30 f(x) 0.30 0.25 0.28 0.17 What is the standard deviation of the distribution? a. 5.34 b. 4.99 c. 5.46 d. 5.38
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A: Step 1:Given data : Mean μ=100Standard deviation σ=15Let X represents the IQ scores of adults with…
|
x |
15 |
20 |
25 |
30 |
|
f(x) |
0.30 |
0.25 |
0.28 |
0.17 |
What is the standard deviation of the distribution?
a. 5.34
b. 4.99
c. 5.46
d. 5.38
Step by step
Solved in 2 steps
- Please do not give solution in image format thankutwo decimal places Calculate the standard deviation of the data shown, 14 ces 10.2 15.8 20.6 6.9 5.9 I Calculator > Next Question MacBook Air 80 F3 O00 F4 F6 F7 F1 F2 2$ 4. @ 23 % & 3 5 W Y 6K Data on residential energy consumption per capita (measured in million BTU) had a mean of 70.8 and a standard deviation of 7.3 for the states east of the Mississippi River. Assume that the distribution of residential energy use is approximately unimodal and symmetric. Complete parts (a) through (d) below. a. Between which two values would you expect to find approximately the middle 68% of the per capita energy consumption rates? Between and million BTU (Round to one decimal place as needed. Use ascending order.) b. Between which two values would you expect to find approximately the middle 95% of the per capita energy consumption rates? Between and million BTU (Round to one decimal place as needed. Use ascending order.) Y c. If an eastern state had a per capita residential energy consumption rate of 55.1 million BTU, would this be considered unusual? Explain. OA. Yes, because 55.1 million BTU is not more than two standard deviations from the mean. OB. Yes, because 55.1 million BTU is…
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