Answer:
i am sorry i cant see the picture
Step-by-step explanation:
Answer:
Step-by-step explanation:
Given
Solving (a): Point estimate of difference of mean
This is calculated as:
Solving (b): 90% confidence interval
We have:
Confidence level is:
Calculate
The z score is:
The endpoints of the confidence level is:
Split
Hence, the 90% confidence interval is:
Solving (c): 95% confidence interval
We have:
Confidence level is:
Calculate
The z score is:
The endpoints of the confidence level is:
Split
Hence, the 95% confidence interval is:
Answer:
0.2425373
Step-by-step explanation:
78 divided by 321.6 equals to 0.2425373
Answer:
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Step-by-step explanation:
Answer:
x=6
y=4
Step-by-step explanation:
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