Question
I need you to reveiw two problems, I did work on both of them.... Please assist me with both problems and show all work. Problem
I need you to reveiw two problems, I did work on both of them.... Please assist me with both problems and show all work.
Problem 1) A data set has a mean of 82 and a standard deviation of 6.7. Find the data value that is 2.3 standard deviationsbelowthe mean.
a) 68.6
b) 95.4
c) 66.59
d) 97.41
My work problem 1)
6.7 x 2.3 = 15.41
82 - 15.41 = 66.59
answer : C
Problem 2) Assume that the weights of quarters are normally distributed with a mean of 5.67 g and a standard deviation 0.070 g. A vending machine will only accept coins weighing between 5.48 g and 5.82 g. What percentage of legal quarters will be rejected? Answer as a percent rounded to 2 decimal places.
A) 1.62%
B) 1.94%
C)0.0196%
D) 2.48%
My work problem 2)
Z score of .15 = 2.1
Z score of - .19 = - 2.1
After this part I get stuck....
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