Answer:
a. Grand Mean = 2.799
b. Standard Deviation = 0.01387
c. Standard Error = 0.0016
d. The range with a Z score of 3 = (2.75739, 2.84061)
Step-by-step explanation:
a. Grand mean :
Given that
Sum of 80 values = 223.91
Total observation = 80
Grand mean = 223.91/80 = 2.799
b. With the excel command "STDEV[range of cells]", we get the standard deviation as = 0.01387
c. Standard error = Standard deviation / root of n

d. The range with a Z score of 3 :
lower limit = mean - (3 * SD) = 2.799 - (0.04161) = 2.75739
upper limit = mean + (3 * SD) = 2.799 + (0.04161) = 2.84061
Answer:
fcriohewdsajiodsx
Step-by-step explanation:
oing this for something! tewsting
Hope this helps
Answer = 4,328.12
4,000
300
20
8
0.1
0.02
Percent measn parts out of 100
105%=105/100=21/20
Answer:
14.49272 or 14.5 (when rounded)
Step-by-step explanation: