B is the answer, because the half of the balls added
Answer: The margin of error = 3.71, confidence interval = (354.04, 361.46) and it means that mean cost is lies within the confidence interval.
Step-by-step explanation:
Since we have given that
Sample size = 400
Mean = $357.75
Standard deviation = $37.89
At 95% confidence level, z = 1.96
We first find the margin of error.
Margin of error is given by

95% confidence interval would be

Hence, the margin of error = 3.71, confidence interval = (354.04, 361.46) and it means that mean cost is lies within the confidence interval.
Answer:
a) At rest
Step-by-step explanation:
25N+25N=50N
therefore, 50N is applied from both the sides
So, 50N - 50N = 0
the, net value is zero, here.
Hope it helps you in understanding!
Mark my answer brainliest!
Follow me!
Give me a heart if u like the answer!
Answer:
(-5,1) would be the coordinates of its image