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
The relationship that exists between a homogeneous mixture and the number of phases in the mixture is one phase.
Given that there is a relationship exists between a homogeneous mixture and the number of phases in the mixture.
We are required to tell the name of the relationship that exists between a homogenous mixture and the number of phases in the mixture.
A homogeneous mixture is basically a gaseous, liquid or solid mixture that has the same proportions of its components throughout a given sample.
The name of the relationship is one phase.
A phase is basically a relationship between the cycles of different periodic waves.
Hence the relationship that exists between a homogeneous mixture and the number of phases in the mixture is one phase.
Learn more about homogenous mixture at brainly.com/question/13056306
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1 pound= 16 ounces, 5 pounds=80 ounces
0.44+79x0.2=16.24$
Answer:
You could eat by using or hands or a utensils
Explanation:
