Answer:
The calculated value Z= -0.5822
|z| = |-0.5822|< 2.576 at 0.01 level of significance
Hence null hypothesis is accepted
The quality manager at Restful Company is certifying a new process that must produce 95% (or better) good product
Step-by-step explanation:
Step-by-step explanation:-
Step:-(i)
The Population proportion is P = 95% =0.95
A sample of 40 containers from the process line are tested, and 93% are found to be good
Sample size ( n) =40
The sample proportion 'p' = 0.93
Level of significance (α )= 0.01.
Null hypothesis:-p = 95%=0.95
Alternative hypothesis:- p≠0.95
The test statistic
(i)
Step:(ii)
substitute all values in (i)

Z = -0.5822
The calculated value Z= -0.5822
|z| = |-0.5822|< 2.576 at 0.01 level of significance
Hence null hypothesis is accepted
Conclusion:-
The quality manager at Restful Company is certifying a new process that must produce 95% (or better) good product