Complete Question:
The mean life of a large shipment of CFLs is equal to 7,500 hours. The population standard deviation is 1,000 hours. A random sample of 64 CFLs indicate a sample life of 7,250 hours.
1. State the Null and Alternative Hypothesis.
2. At the 0.05 level of significance, is there evidence that mean life is different from 7,500 hours.
3. Construct a 95% confidence interval estimate of the population mean life of the CFLs.
4. Compute the p-value and interpret its meaning.
Answer:
-2, (7005, 7450), 0.045
Explanation:
1).
H₀: mean of life shipment is 7500 hours
the hypothesis are outlined as follows
H₀: 
7500
H₁: 
7500
where, n = 64, x = 7250, 
1000 hours
Test statistics:
Our conclusion from the above result is that there is sufficient evidence to say that the mean life is different from 7500 hours
2). 95% confidence Interval for the population mean 
is
![[7250-1.96\times \frac{1000}{\sqrt{64}},7250+1.96\times \frac{1000}{\sqrt{64}} ]\\\\(7005,7495)](https://tex.z-dn.net/?f=%5B7250-1.96%5Ctimes%20%5Cfrac%7B1000%7D%7B%5Csqrt%7B64%7D%7D%2C7250%2B1.96%5Ctimes%20%5Cfrac%7B1000%7D%7B%5Csqrt%7B64%7D%7D%20%5D%5C%5C%5C%5C%287005%2C7495%29)
3).
the p-value is given by
Answer:
ask to google or watch scary movie
<h2> Children & Voting</h2>
Consequences and both negative and positive sides
I think children should not be allowed to vote for things such as presidents, since it's a big responsibility. But I do think, early teens and teenagers (12+) should be smart enough to elect a candidate, and predict the consequences of their election.
If I vote for a person with a dirty history, I should predict there is no reason why he/she should suddenly be a clean person.
If I vote for a person with a clean history, but that doesn't seem to be willing to do or change anything, I should be able to predict that things will remain the same, if not worse.
Even if most children that age, are responsible enough to vote, it's a huge responsibility, and the truth is, newer generations are gradually loosing interest in politics, which means they will relatively become more politically naive, affecting their decisions.
Hope it helped,
BioTeacher101
Answer:
5. D- Tone, Pace, Volume, And word choice
6. D- all of the above
Answer:the 1905 massacre of people who were protesting their poor living conditions
Explanation:
