Answer:
(233.8436 ; 271.0564)
Yes
Step-by-step explanation:
Given :
Sample mean, xbar = 252.45
Sample standard deviation, s = 74.50
Sample size, n = 64
α = 0.05
The confidence interval :
Mean ± margin of error
Margin of Error = tα/2 * s/√n
df = n - 1 = 64 - 1 = 63
t(α/2, df = 63) = 1.998
Margin of Error = 1.998 * 74.50/√64
Margin of Error = 18.6064
The confidence interval :
252.45 ± 18.6064
(233.8436 ; 271.0564)
Comparing the confidence interval value and the mean value reported by the American Automobile Association ;it can be concluded that the mean reported by the American Automobile Association differ from the mean spent at Niagara Fall as 215.60 falls below the confidence interval.
Answer:$216,000
Step-by-step explanation: Just multiply the value (in this case 160,000$) by 1.35.
Answer:
Step-by-step explanation:
Now, this can be tricky.
<u>But, we can use a calculator.</u>
<u>According to the calculator, the answer was 0.7071.</u>
That means 0.7071 is the answer.
This image is optional. Use it for hints.
Answer:
1,888 pencils
Step-by-step explanation:
Answer:
358
Stefffffffffffffffffffffffffffp-by-step explanation:
