Answer:
Step-by-step explanation:
4. 4p²
5.
6. 37
Answer:
It should be the second one
Step-by-step explanation:
Answer:
Option a) A 95% confidence interval for the mean diameter of the 120 bearings in the sample is .
Step-by-step explanation:
We are given the following information in the question:
Sample size, n = 120
Sample mean = 10 mm
Standard Deviation = 0.24 mm
Formula:
Hence, the correct interpretation for the confidence interval is given by option a).
A 95% confidence interval for the mean diameter of the 120 bearings in the sample is .
We have to consider the factor of sampling of 120 ball bearings from a population of 10,000 ball bearings.
Let the initial money be x so by question,
3x/5 +1x/5+1200=x
or, 1200= x - 4x/5
or, 1200 = 1x/5
or, 6000= x
hence the initial money was 6000$
Answer:
$41.47
Step-by-step explanation: