MATLAB: An Introduction with Applications
MATLAB: An Introduction with Applications
6th Edition
ISBN: 9781119256830
Author: Amos Gilat
Publisher: John Wiley & Sons Inc
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According to a report, 67.3% of murders are committed with a firearm. 

(a) If 100 murders are randomly selected, how many would we expect to be committed with a firearm?

(b) Would it be unusual to observe 78 murders by firearm in a random sample of 100 murders? Why?

---

(a) We would expect [___] to be committed with a firearm.

(b) Choose the correct answer below.

- A. No, because 78 is less than μ - 2σ.
- B. No, because 78 is greater than μ + 2σ.
- C. Yes, because 78 is greater than μ + 2σ.
- D. No, because 78 is between μ - 2σ and μ + 2σ.
- E. Yes, because 78 is between μ - 2σ and μ + 2σ.
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Transcribed Image Text:According to a report, 67.3% of murders are committed with a firearm. (a) If 100 murders are randomly selected, how many would we expect to be committed with a firearm? (b) Would it be unusual to observe 78 murders by firearm in a random sample of 100 murders? Why? --- (a) We would expect [___] to be committed with a firearm. (b) Choose the correct answer below. - A. No, because 78 is less than μ - 2σ. - B. No, because 78 is greater than μ + 2σ. - C. Yes, because 78 is greater than μ + 2σ. - D. No, because 78 is between μ - 2σ and μ + 2σ. - E. Yes, because 78 is between μ - 2σ and μ + 2σ.
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