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Chapter 6: Q.6.121 (page 283)

We have provided a normal probability plot of data from a sample of a population. In each case, assess the normality of the variable under consideration.

Short Answer

Expert verified

There are no outliers in the data, which is usual.

Step by step solution

Given Information

Consider the probability of the normalcy plot.

Explanation

The data is distributed along a straight line, according to the specified normality probability plot.

As a result, the data is normal and there are no outliers.

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Most popular questions from this chapter

Explain how Table II is used to determine the area under the standard normal curve that lies

a. to the left of a specified $z$ -score.

b. to the right of a specified $z$ -score.

c. between two specified $z$ -scores.

Briefly, for a normally distributed variable, how do you obtain the percentage of all possible observations that lie within a specified range?

19. If you observe the values of a normally distributed variable for a sample, a normal probability plot should be roughly_________

A variable is normally distributed with a mean $68$ and standard deviation $10$ . Find the percentage of all possible values of the variable that

a. lie between $73$ and $80$ .

h. are at least $75$ .

c. are at most $90$ .

12. Consider the normal curves that have the parameters $μ = 1.5$ and $σ = 3; μ = 1.5$ and $σ = 6.2; μ = - 2.7$ and $σ = 3; μ = 0$ and $σ = 1 .$

a. Which curve has the largest spread?

b. Which curves are centered at the same place?

c. Which curves have the same spread?

d. Which curve is centered farthest to the left?

e. Which curve is the standard normal curve? $σ$

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We have provided a normal probability plot of data from a sample of a population. In each case, assess the normality of the variable under consideration.

Short Answer

Step by step solution

Given Information

Explanation

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Most popular questions from this chapter

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