2) Sample mean can be used to make estimations of population mean. Considering the following example: It is known that population standard deviation is 11 days for the days of absence per worker per year in an industry. A random sample of 100 workers gives a mean of 8 days' absence. a. Please calculate the standard error of the sample mean. b. Please construct 95 percent confidence intervals for the population mean (Z0.025 = 1.96). c. Please construct 99 percent confidence intervals for the population mean (Zo.005 = 2.575). d. Comparing your answers from subquestions b and c, sustained your findings.

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Q: Part 4 of this queston

A: fx=x-13 x0=1x1=1.25x2=1.6

Q: Can this be done by a person ?

A: Given f(t)=2t3Find Laplace transform of f(t) .

Q: one standart?

A: here use Empirical rule

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Q: Could you also help me with part e

A:

Q: Can you explain how you found part b? It does not make sense to me

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Q: can this be done by a human?

A: F(s)=(-4s-2) /(s2-2s+26)

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A:

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Q: sec. 3.

A:

Q: What about parts c and d?

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Q: part three is incorrect

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Q: Could you explain part(b) as well?

A: Our objective is given below:

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Q: can you provide a counter example

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Q: What about third one?

A: