Question
A company that produces snack foods uses a machine to package 454 grams bags of potato...
- A company that produces snack foods uses a machine to package 454 grams bags of potato chips. A random sample of 75 bags of potato chips has a mean of 450 grams and standard deviation of 8.48 grams. Perform a hypothesis test at the 1% significance level to determine if the machine is working properly.
Homework Answers
Answer #1
Solution :
Givan that ;
= 454
= 450
= 8.48
n = 75
This is the two tailed test .
The null and alternative hypothesis is ,
H0 :
= 454
Ha :
454
Test statistic = z
= (
- 
) /
/ 
n
= ( 450 - 454 ) / 8.48 /
75
= -4.09
The test statistic = -4.09
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