Solution :
It is given that the mean and the standard deviation for a sample of 24 domestic cars is 35.696 MPG and 4.931 MPG respectively and the mean and the standard deviation for a sample of 16 cars is 34.345 MPG and 7.118 respectively.
The 90% confidence level for the men difference between the two samples is (-2.906, 2.844).
We know that the confidence interval is calculated to determine the mean difference among the two samples with the specified level of confidence.
Therefore, we can say that with 90% confidence, we have the 90% chances that the true mean differences will be within the range of -2.906 MPG to 2.844 MPG.
Thus, it is required 90% confidence interval interpretation.
Answer:
47.67
Step-by-step explanation:
210/360×2×22/7×13
=47.67
Answer:
9(4 +5)
Step-by-step explanation:
there is a common factor of 9 in both 36 and 45
9*4 = 36
9*5 = 45
by factoring 9 out of both 36 and 45, we get 9(4 + 5)
Answer:
18
Step-by-step explanation:
Since he does 90 cars-----5 days
x cars--------1 day
we multiply 90 by 1 then over 5
Answer:
7/4 or 1 3/4
Step-by-step explanation: