Answer: 252
Step-by-step explanation:
You just multiply 84 by two and then ad another 84.
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:
Step-by-step explanation:
Replace x with f(x)
solve for f(x)
Answer:
125
Step-by-step explanation:
because it is the next side of x