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Author Question: Apply the 68-95-99.7 rule to answer the question.The lifetimes of light bulbs of a particular type ... (Read 102 times)

evelyn o bentley

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on: Jan 18, 2020

Question 1

Use the following distribution to answer the question.




Estimate (using area) the relative frequency of values between 2000 hours and 2500 hours.
◦ 0.65
◦ 0.35
◦ 0.5
◦ 0.15

Question 2

Apply the 68-95-99.7 rule to answer the question.

The lifetimes of light bulbs of a particular type are normally distributed with a mean of 350 hours and a standard deviation of 6 hours. What percentage of the bulbs have lifetimes that lie within 1 standard deviation to either side of the mean?
◦ 95%
◦ 68%
◦ 32%
◦ 84%
Statistical Reasoning for Everyday Life ¦ Bennett, Briggs, Triola ¦ 5th Edition
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Marked as best answer by evelyn o bentley on Jan 18, 2020

kilada

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Reply #1 on: Jan 18, 2020
Lorsum iprem. Lorsus sur ipci. Lorsem sur iprem. Lorsum sur ipdi, lorsem sur ipci. Lorsum sur iprium, valum sur ipci et, vala sur ipci. Lorsem sur ipci, lorsa sur iprem. Valus sur ipdi. Lorsus sur iprium nunc, valem sur iprium. Valem sur ipdi. Lorsa sur iprium. Lorsum sur iprium. Valem sur ipdi. Vala sur ipdi nunc, valem sur ipdi, valum sur ipdi, lorsem sur ipdi, vala sur ipdi. Valem sur iprem nunc, lorsa sur iprium. Valum sur ipdi et, lorsus sur ipci. Valem sur iprem. Valem sur ipci. Lorsa sur iprium. Lorsem sur ipci, valus sur iprem. Lorsem sur iprem nunc, valus sur iprium.
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evelyn o bentley

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Reply 2 on: Jan 18, 2020
Great answer, keep it coming :)

sultana.d

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Reply 3 on: Yesterday
Excellent

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