It is known that the population variance equals 484 . With a .95 probability, the sample size that ...

Author Question: It is known that the population variance equals 484 . With a .95 probability, the sample size that ... (Read 91 times)

awywial

Hero Member
Posts: 577

on: Jun 24, 2018

It is known that the population variance equals 484 . With a .95 probability, the sample size that needs to be taken to estimate the population mean if the desired margin of error is 5 or less is
a. 25
b. 74
c. 189
d. 75

Question 2

The skewness measure for exponential distributions is _____.
a. 0
b. 1
c. 2
d. 3

jaymee143

Sr. Member
Posts: 341

Reply #1 on: Jun 24, 2018

Answer to Question 1

d

Answer to Question 2

c

Need homework help now?

Ask unlimited questions for free

Ask a Question

« previous next »

Did you know?

On average, someone in the United States has a stroke about every 40 seconds. This is about 795,000 people per year.

Did you know?

The term bacteria was devised in the 19th century by German biologist Ferdinand Cohn. He based it on the Greek word "bakterion" meaning a small rod or staff. Cohn is considered to be the father of modern bacteriology.

Did you know?

There are immediate benefits of chiropractic adjustments that are visible via magnetic resonance imaging (MRI). It shows that spinal manipulation therapy is effective in decreasing pain and increasing the gaps between the vertebrae, reducing pressure that leads to pain.

Did you know?

Parkinson's disease is both chronic and progressive. This means that it persists over a long period of time and that its symptoms grow worse over time.

Did you know?

The first successful kidney transplant was performed in 1954 and occurred in Boston. A kidney from an identical twin was transplanted into his dying brother's body and was not rejected because it did not appear foreign to his body.