Answer:
B. 359
Step-by-step explanation:
Given that:
The margin of error (e) must be within 0.3 unit, The standard deviation (σ) = 2.9 and the the confidence level = 95% = 0.95
α = 1 =0.95 = 0.05

The z score of 0.025 corresponds to the z score of 0.0475 (0.5 - 0.025) which can be gotten from the normal probability table.
Therefore: 
The formula for the margin of error is given by:

Therefore the smallest sample size (n) is 359
Answer:

Step-by-step explanation:

Allison worked 40 regular hours and 8 overtime hours.
8*15*1.5=180
Answer: c
Step-by-step explanation:
in the attachment
the yellow one is correct, I did the math. I am 99% sure this is correct, but I would love it if you privately texted me if this is not the answer.
Thank you
Good luck