Answer:
Following are the answer to this question:
Step-by-step explanation:
Given:
n = 30 is the sample size.
The mean
= 7.3 days.
The standard deviation = 6.2 days.
df = n-1

The importance level is
= 0.10
The table value is calculated with a function excel 2010:

The method for calculating the trust interval of 90 percent for the true population means is:
Formula:


It can rest assured that the true people needs that middle managers are unavailable from 5,37 to 9,23 during the years.
Answer:
The answer is A
Step-by-step explanation:
Answer:
21,000
Step-by-step explanation:
........................
Answer:
= 3(49c^2+16)
Step-by-step explanation:
Third one down. you can tell just by the first two coordinates