An extended-life light bulb claims the bulb has an average, Ask an Expert

Statistics

An extended-life light bulb claims the bulb has an average life of 12,000 hours, with a standard deviation of 500 hours. If the distribution is bell shaped and symmetrical, what is the approximate percentage of these bulbs that will last?

a. Between 11,000 and 13,000 hours?

b. Over 12,500 hours?

c. Less than 11,000 hours?

d. Between 11,500 and 13,000 hours?

View complete question

Statistics and Probability, Statistics

Category:- Statistics and Probability
Reference No.:- M9372582

Have any Question?Write your Review or question?

Related Questions in Statistics and Probability

1 a stat 200 instructor wants to know if students tend to

1. A STAT 200 instructor wants to know if students tend to score differently on the lesson 4 and 5 quizzes. Data were collected from a representative sample of 60 students during the Summer 2018 semester. Data were paire ...

Rachel age 65 has begun establishing many different trusts

Rachel, age 65, has begun establishing many different trusts. Of the following beneficiaries listed in her trusts, who would be considered a skip person for purposes of the GSTT? I. Adam, age 25, her new husband II. Bart ...

A company designs a new laptop computer and wants to

A company designs a new laptop computer and wants to investigate customers' preferences with respect to three select laptop features. The features are Price (High vs. low) Processor Speed (Low vs. medium vs. high) Weight ...

The beta corp has decided to enter the next generation in

The BETA Corp. has decided to enter the next generation in customer service. In order to do so they need to purchase a new piece of equipment. The equipment is highly specialized and needs to be created to exact specific ...

The acme insurance company has two types of customers

The ACME Insurance Company has two types of customers, careful and reckless. A careful customer has an accident during the year with probability 0.01. A reckless customer has an accident during the year with probability ...

Please help me study for a test by answering this

Please help me study for a test by answering this question. A stock is just paid a dividend of $0.91 and is growing at a constant rate of 10 percent per year. If the required rate of return is 15 percent, what is the sto ...

A quiz consists of 70 multiple choice questions each with

A quiz consists of 70 multiple choice? questions, each with five possible? answers, only one of which is correct. If a student guesses on each? question, what is the mean and standard deviation of the number of correct? ...

Suppose the timing device used in the mens race failed to

Suppose the timing device used in the men's race failed to activate at the start of the race and instead began to record the times seconds into the race. Consider how the competitors' times would be affected. Would the s ...

Suppose a stock has just paid a 44 per share dividend d0

Suppose a stock has just paid a $4.4 per share dividend (D 0 ). The dividend is projected to grow at 15% for the next three years, then 6% thereafter indefinitely. What should be the amount of dividend in four year ...

A researcher working at a particular company wants to know

A researcher working at a particular company wants to know if workers' health would improve if they were given extra days 'off. In this company, all workers undergo a standard physical exam twice a year and after each ex ...

4,153,160 Questions Asked
13,132 Experts
2,558,936 Questions Answered

Ask Experts for help!!

Looking for Assignment Help?

Start excelling in your Courses, Get help with Assignment

Write us your full requirement for evaluation and you will receive response within 20 minutes turnaround time.

Ask Now Help with Problems, Get a Best Answer

Recent Questions

Ask Statistics and Probability Expert