Logo
Home Study Material Contact Search
AI Chat FREE
  1. mathematics
  2. basic math
  3. suppose that the lifetimes of light bulbs are appr

Suppose that the lifetimes of light bulbs are approximately normally? distributed, with a mean of 56 hours...

60.1K

Verified Solution

Question

Basic Math

Suppose that the lifetimes of light bulbs are approximatelynormally? distributed, with a mean of

56 hours and a standard deviation of 3.3 hours. With this?information, answer the following questions.?

(a) What proportion of light bulbs will lastmore than61 ?hours?

?(b) What proportion of light bulbs will last51hours or? less??

(c) What proportion of light bulbs will lastbetween59 and 62 hours??

(d) What is the probability that a randomlyselected light bulb lasts less than 45 ?hours?

Answer & Explanation Solved by verified expert
3.7 Ratings (421 Votes)
    See Answer
Get Answers to Unlimited Questions

Join us to gain access to millions of questions and expert answers. Enjoy exclusive benefits tailored just for you!

Membership Benefits:
  • Unlimited Question Access with detailed Answers
  • Zin AI - 3 Million Words
  • 10 Dall-E 3 Images
  • 20 Plot Generations
  • Conversation with Dialogue Memory
  • No Ads, Ever!
  • Access to Our Best AI Platform: Flex AI - Your personal assistant for all your inquiries!
Become a Member

Other questions asked by students

Basic Math
1.2K views

Below is a position time graph of the O Connor Panthers in pursuit of a...

Physics
1.2K views

Mark and his Harley Sportster has a combined mass of 950kg. a) Ignoring road and air...

Mechanical Engineering
1.2K views

Discuss the multiple factors which affect/control the maximum drawing ratio per pass in drawing processes?

Basic Math
1.2K views

Complete the table for a savings account in which interest is compounded continuously Round any...

Basic Math
1.2K views

Of the cartons produced by a company, 8% have a puncture, 5% have a smashed...

Statistics
1.2K views

50 50 chance of being correct 14 SAT Test When making a random guess for...

Statistics
1.2K views

district were sampled and asked to disclose the number of children under the age of...

Algebra
1.2K views

2 Donald Westhoven is single After meeting his annual deductible he had the following non...

Accounting
1.2K views

Question: Which of the following is an example of a...

Accounting
1.2K views

PEM, Incorporated, is experlencing financial difficulty due to erratic sales of its only product, a...

Accounting
1.2K views

Which accounts are increased with debits?

Finance
1.2K views

If Alyssa wants to fully hedge her $1,350,000 portfolio, the futures contracts on Treasury bills...