Question

(01.06 LC)

The weight of laboratory grasshoppers follows a Normal distribution, with a mean of 90 grams and a standard deviation of 2 grams. What percentage of the grasshoppers weigh between 86 grams and 94 grams? (3 points)

99.7% |
||

95% |
||

68% |
||

47.5% |
||

34% |

Answer #1

**Solution:**

The weight of laboratory grasshoppers follows a Normal distribution, with a mean of 90 grams and a standard deviation of 2 grams. What percentage of the grasshoppers weigh between 86 grams and 94 grams?

**Answer: 95%**

**Explanation: We have to find:**

**Using the z-score formula, we have:**

** **

** **

**Now using the standard normal table, we
have:**

**Therefore, the correct option is 95%**

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