6.) The average delivery charge for a refrigerator is $54. The standard deviation is 53. Find the
2 answers:
$-6.97-$114.96
Using the invNorm function on the calculator, the range of 75% of the data values is $-6.97 to $114.96. In stats, not everything makes sense.
To use the invNorm function, go to 2nd vars, invNorm. Put .75 in the area, 54 in the mean, and 53 in the standard deviation.
Answer:
88.9%
Step-by-step explanation:
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