A study determined the average amount a person spends on candy during Halloween is $80 with a standard deviation of $15.
A study determined the average amount a person spends on candy during Halloween is $80 with a standard deviation of $15.
Mathematics For Machine Technology
8th Edition
ISBN:9781337798310
Author:Peterson, John.
Publisher:Peterson, John.
Chapter29: Tolerance, Clearance, And Interference
Section: Chapter Questions
Problem 16A: Spacers are manufactured to the mean dimension and tolerance shown in Figure 29-12. An inspector...
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Transcribed Image Text:A study determined the average amount a person spends on candy during
Halloween is $80 with a standard deviation of $15.
a) How much does the top 15% spend on Halloween candy? Round your
answer to two decimal places.
Calculator Command: 0.0000005
Value: 5.1049
To observe how much is spent in Howard County, we will knock on 60 doors
and question them.
b) According to the Central Limit Theorem, is this a good enough sample?
Explain your answer. 15/ square root 80=
c) What is the probability our sample will spend at most $85? Round your
answer to four decimal places.
Calculator Command: 0.000000007
Value: 7.7385
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