Answer:
The sample size needed to be taken is approximately 74.
Step-by-step explanation:
To get alpha; we have 1 - 0.95 = 0.05
Therefore, 
The we look up z* in a Standard Normal table where α = 0.025 area in each tail.
From the table, z* = 1.96
From the question variance is 484, then the standard deviation is 22
Standard deviation = 
And margin of error is 5 or less
The formula for margin of error is given as:
margin of error = 

The approximate value of n is 74.
Answer:
11 ft =132in
Step-by-step explanation:
first u multiply the length value which is 12
11 x 12 = 132
The first one because if you add all the positives you get 4 and then if you add all the negatives you get 7 so then you do 4+(-7)= -3
Answer:
3.07, 3.072, 3.7, 3.72 (the last option)
Step-by-step explanation:
Answer:
23/6
Step-by-step explanation: