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Chapter 2: Q.70 (page 135)

The weights of laboratory cockroaches follow a Normal distribution with mean 80grams and standard deviation 2grams. The figure below is the Normal curve for this distribution of weights.

Point C on this Normal curve corresponds to

(a) 84grams.

(c) 78grams.

(e) 74grams

(b) 82grams.

(d) 76grams.

Short Answer

Expert verified

The correct answer is Option (C)78grams.

Step by step solution

01

Given Information

Normal distribution with mean =80

Standard deviation =2grams

02

Explanation

The standard deviation σfor pointCis one standard deviation below the mean.

(μ):

μ=80grams

σ=2grams

80-2=78grams

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