Answer:
24
Step-by-step explanation:
2 times 1 plus 2 times 11 equals 24
For a known standard deviation a confidence level of 99% we may consider Z=<span>2.576.
So, the confidence interval would be calculated by:
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,
⇔
⇔
,
⇔
⇔
,
⇔
⇔
,
Considering the given data, with a 99% cofidence, it can be said that the true mean of hours of study in a typical week for first-year college students is between 14.282 and 16.318.
Answer:
0
Step-by-step explanation:
because it has no slope
Answer:
1. Strange
Step-by-step explanation: