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Chapter 2: Q T2.2. (page 148)

For the Normal distribution shown, the standard deviation is closest to

a.0.b.1.c.2.d.3.e.5.

Short Answer

Expert verified

The correct option is (d)3

Step by step solution

01

Given information

The figure is:

02

Explanation

The mean of the normal distribution is around 2 while the peak of the normal distribution is at 2

渭=2

The distance between the vertical line and the inflection point where the curve seems to be essentially a straight line is the standard deviation of the normal distribution. This distance is around 3 in this case, hence the standard deviation is approximately 3 in this situation.

蟽=3

Hence, the correct option is (d).

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Most popular questions from this chapter

A different species of cockroach has weights that are approximately Normally distributed with a mean of 50 grams. After measuring the weights of many of these cockroaches, a lab assistant reports that 14% of the cockroaches weigh more than 55 grams. Based on this report, what is the approximate standard deviation of weight for this species of cockroaches?

a.4.6b.5.0c.6.2d.14.0

e. Cannot determine without more information.

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