Answer:
: The average time postal employees have worked for the postal service is 7 years.
: The average time postal employees have worked for the postal service is not 7 years.
Step-by-step explanation:
We need to know the significance level to decide if the average time worked for the postal service has changed according to the the random sample of 100 postal employees working time.
Aur hypothesis would use two tailed critical region, sice the hypothesis is an equality.
Answer:
19X5X2
Step-by-step explanation:
You have to know how to prime factorize
190
19 X 10
5 x 2
The volume is scale factor³
Take the square root of the volume ratio
which is
The ratio of their radii is 3 : 5
Answer:
99 degrees
Step-by-step explanation:
angle 8 = 99 degrees because corresponding or 'f shaped' angles are equal
The number can be separated into 35+0.125
0.125 can be rewritten as,
So, the number can be rewritten;
35+
35