Answer:
130,000 -:- by 30 x 0.3 x 12 = 15,600.
Step-by-step explanation:
(I hope its right, Im not good at math)
Solution :
Given :
Sample mean,
Sample size, n = 40
Standard deviation, s = 83.2
∴ The null hypothesis is
Alternate hypothesis is
Test statistic :
z = 0.813
Now at α = 0.05, for a right tailed,
Since, , we fail to reject the null hypothesis.
This would be 19/2 if u fract dec be like 19.2 not sure if it is right but hipe it helps lol