In a study of the life expectancy of 400 people in a certain geographic region, If a sample of 50 people from this region is selected, what is the probability the mean age death was 70 years, and the...

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In a study of the life expectancy of 400 people in a certain geographic region,<br>If a sample of 50 people from this region is selected, what is the probability<br>the mean age death was 70 years, and the standard deviation was 5.1 years.<br>that the mean life <pectancy wil! be less than 68 years?<br>1.<br>Step 1: Identity the parts of the problem.<br>Given: 1-2.<br>3-4.<br>5-6.<br>7-8.<br>Find:<br>9-10.<br>Step 2: Use the formula to find the z-score.<br>Z = -u<br>In<br>11-14. Substitute the values in the formula.<br>15-17. Write the z-score.<br>

Extracted text: In a study of the life expectancy of 400 people in a certain geographic region, If a sample of 50 people from this region is selected, what is the probability the mean age death was 70 years, and the standard deviation was 5.1 years. that the mean life
Step 3: Use the z-table to look up the z-score you calculated in Step 2.<br>18-20. Corresponding area<br>Step 4: Draw a graph and plot the z-score and its corresponding area. The<br>Label and shade the part that you're looking for. (21-30):<br>Step 5: Subtract your score from 0.500.<br>31-33.<br>Step 6: Convert the decimal in Step 5 to a percentage.<br>34-35.<br>Conclusion (36-40):<br>

Extracted text: Step 3: Use the z-table to look up the z-score you calculated in Step 2. 18-20. Corresponding area Step 4: Draw a graph and plot the z-score and its corresponding area. The Label and shade the part that you're looking for. (21-30): Step 5: Subtract your score from 0.500. 31-33. Step 6: Convert the decimal in Step 5 to a percentage. 34-35. Conclusion (36-40):

Jun 08, 2022
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