80, 81, 82, 83, 84, 85, 86, 87, 88, 89
The answer and work are shown by the picture given.
Answer:
can u ask him to make some for me too? thx!
Step-by-step explanation:
Answer: -1.55
Step-by-step explanation:
Given : Mean : 
Standard deviation : 
Sample size : 
Sample mean : 
The test statistic for the population mean is given by :-


Hence, the value of z statistic = -1.55