Shorney construction company bids on projects assuming that the mean idle time per worker is 72 or fewer minutes per day. a sample of 30 construction workers will be used to test this assumption. assume that the population standard deviation is 20 minutes. a. state the hypotheses to be tested. anderson, david r.. essentials of statistics for business and economics (p. 435). south-western college pub. kindle edition.

Null hypothesis :

Alternate hypothesis :

Step-by-step explanation:

To Find : State the hypotheses to be tested.

Solution

Mean = 72

Standard deviation = 20

N = 30

Claim : Shorney Construction Company bids on projects assuming that the mean idle time per worker is 72 or fewer minutes per day.

So, Null hypothesis :

Alternate hypothesis :

b

step-by-step explanation:

the word superfluous means unnecessary

2/3x + 7 = 29

step-by-step explanation:

two thirds = 2/3

plus a number = x

at least 29 = 29

there for you should get 2/3x + 7 = 29