The z-score for 910 h is -1.35.Using the answer from Step 1, what percent of these light bulbs will last at least 910 h? (Round your answer to one decimal place.) ## Area Under Standard Normal Distribution### Step 1A manufacturer of light bulbs finds that one light bulb model has a mean life span of 1026 hours with a standard deviation of 86 hours.Find the z-score for light bulbs which last 910 hours. (Round your answer to two decimal places.)\[ 910 \, \text{h}: z = -1.35 \] ✅### Step 2The z-score for 910 hours is -1.35.Using the answer from Step 1, what percent of these light bulbs will last at least 910 hours? (Round your answer to one decimal place.)\[ \_\_\_\_ \, \% \] ❌**Buttons:**- **Submit**- **Skip (you cannot come back)**This exercise helps you learn how to calculate the z-score of a given lifespan and determine the percentage of values above a certain threshold using the z-score table.

From part (a), the z-score for x=910 is -1.35.

Answered: Step 1 A manufacturer of light bulbs…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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The z-score for 910 h is -1.35.
Using the answer from Step 1, what percent of these light bulbs will last at least 910 h? (Round your answer to one decimal place.)

## Area Under Standard Normal Distribution

### Step 1

A manufacturer of light bulbs finds that one light bulb model has a mean life span of 1026 hours with a standard deviation of 86 hours.

Find the z-score for light bulbs which last 910 hours. (Round your answer to two decimal places.)

\[ 910 \, \text{h}: z = -1.35 \] ✅

### Step 2

The z-score for 910 hours is -1.35.

Using the answer from Step 1, what percent of these light bulbs will last at least 910 hours? (Round your answer to one decimal place.)

\[ \_\_\_\_ \, \% \] ❌

**Buttons:**

- **Submit**
- **Skip (you cannot come back)**

This exercise helps you learn how to calculate the z-score of a given lifespan and determine the percentage of values above a certain threshold using the z-score table.

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