{[ promptMessage ]}

Bookmark it

{[ promptMessage ]}

Chapter6-PracticeActivity

Chapter6-PracticeActivity - STA2023 Chapter 6 Practice...

This preview shows pages 1–2. Sign up to view the full content.

1 STA2023 – Chapter 6 Practice Activity 1. Suppose the most recent census reported that ages of all Alachua County residents are normally distributed with an average of 28.1 years and a standard deviation of 2.5 years. To verify the accuracy of the census results, a statistics student collected age data from a random sample of 500 Alachua County residents and found the average age of these 500 people to be 27.8 years, with a standard deviation of 2.3 years. Provide an appropriate symbol for each of the numerical values given in this scenario. 28.1 years: 2.5 years: 500 people: 27.8 years: 2.3 years: 2. The amount of Jen’s monthly phone bill is normally distributed with a mean of \$61 and a standard deviation of \$12. Use the 68-95-99.7 rule to answer each of the following questions. You should draw a well-labeled Normal curve for each part. A. Approximately what percent of the time is Jen’s phone bill between \$49 and \$61? B. Approximately what percent of the time is Jen’s phone bill less than \$37?

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document
This is the end of the preview. Sign up to access the rest of the document.

{[ snackBarMessage ]}

Page1 / 2

Chapter6-PracticeActivity - STA2023 Chapter 6 Practice...

This preview shows document pages 1 - 2. Sign up to view the full document.

View Full Document
Ask a homework question - tutors are online