Question

1. The manufacturer claims that the light bulb will be operational for an average of 34...

1. The manufacturer claims that the light bulb will be operational for an average of 34 months. For this math assignment, assume that the exponential distribution is the best model for the situation.

pexp(k, lambda)
pexp(k, lambda, lower.tail = FALSE).

a. What is the probability that the light bulb lasts less than 40 months?

b. What is the probability that the light bulb lasts less than 34 months?

c. What is the probability that the light bulb lasts at least 40 months?

d. What is the probability that the light bulb lasts at least 28 months?

e. What is the probability that the light bulb lasts more than 32 months?

f. What is the probability that the light bulb lasts more than 32 months?

g. What is the probability that the light bulb lasts at most 42 months?

h. What is the probability that the light bulb lasts at most 24 months?

i. What is the probability that the light bulb lasts between 34 and 40 months?

j. What is the probability that the light bulb lasts between 24 and 43 months?

Please show the format in code for the answer.

0 0
Add a comment Improve this question Transcribed image text
Know the answer?
Add Answer to:
1. The manufacturer claims that the light bulb will be operational for an average of 34...
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Not the answer you're looking for? Ask your own homework help question. Our experts will answer your question WITHIN MINUTES for Free.
Similar Homework Help Questions
  • 8. A manufacturing company of light bulb claims that an average light bulb lasts 500 days....

    8. A manufacturing company of light bulb claims that an average light bulb lasts 500 days. A contractor randomly selects 30 bulbs for testing. The sampled bulbs last an average of 490 days, with a standard deviation of 100 days. If the claim were true, what is the probability that 30 randomly selected bulbs would have an average life of no more than 490 days? [10]

  • (Sec. 4.3) An average light bulb manufactured at The Lightbulb Company lasts and average of 300...

    (Sec. 4.3) An average light bulb manufactured at The Lightbulb Company lasts and average of 300 days, with a standard deviation of 50 days. Suppose the lifespan of a light bulb from this company is normally distributed. (a) What is the probability that a light bulb from this company lasts less than 210 days? More than 330 days? (b) What is the probability that a light bulb from this company lasts between 280 and 380 days? (c) How would you...

  • Suppose the manufacturer claims that the mean lifetime of a light bulb is more than 10,000...

    Suppose the manufacturer claims that the mean lifetime of a light bulb is more than 10,000 hours. In a sample of 30 light bulbs, it was found that they only last 9,900 hours on average. Assume the population standard deviation is 120 hours. At 0.05 significance level, can we reject the claim by the manufacturer? Select one: a. We reject the claim b. We accept the claim

  • 1. Suppose that the longevity of a light bulb is exponential with a mean lifetime of...

    1. Suppose that the longevity of a light bulb is exponential with a mean lifetime of eight years.  Find the probability that a light bulb lasts between 6 and 8 years. a. 0.875 b. 0.125 c. 0.896 d. 0.104 2. At a 911 call center, calls come in at an average rate of one call every two minutes. Assume that the time that elapses from one call to the next has the exponential distribution. Find the probability after a call is...

  • 4. A company tells you that their light bulbs last two years on average, with an...

    4. A company tells you that their light bulbs last two years on average, with an exponential distribution. a. If they are correct, what is the probability that the light bulb will last between three and four years? b. What is the probability that the light bulb will last one year or less? c. If the light bulb lasts eight years, should you be surprised? (Is the probability of this event less than five percent?) Does it seem like the...

  • 1.Suppose that the longevity of a light bulb is exponential with a mean lifetime of eight...

    1.Suppose that the longevity of a light bulb is exponential with a mean lifetime of eight years.  Find the probability that a light bulb lasts between 6 and 8 years. a.2.7 b. 8 c. 8.4 d. 3.4

  • A light bulb (the lifetime is assumed to follow an exponential distribution) has a mean life...

    A light bulb (the lifetime is assumed to follow an exponential distribution) has a mean life of 400 hours. What is the probability of the bulb lasting 1) less than 300 hours; 2) more than 500 hours; 3) between 200 and 500 hours?

  • Energetic Co., a battery manufacturer, claims their battery lasts for 61.51 months with a standard deviation...

    Energetic Co., a battery manufacturer, claims their battery lasts for 61.51 months with a standard deviation of 9.112 months. You randomly sample 24 of these batteries. Assuming the distribution for the battery lifetime is approximately normal, what is the probability the average lifetime is less than 59.44? Question 9 options: 1) 0.8671 2) 0.4101 3) 0.1155 4) 0.5899 5) 0.1329

  • A bulb manufacturer claims that its compact fluorescent bulbs have an average of less than 3.5...

    A bulb manufacturer claims that its compact fluorescent bulbs have an average of less than 3.5 mg of mercury. A sample of 25 bulbs showed a mean of 3.39 mg of mercury. The population standard deviation is 0.18 mg. Using α = 0.1, does the sample support the manufacturer’s claim? (use both methods)

  • 5. The life of a type of electric light bulb can be modeled by an exponential...

    5. The life of a type of electric light bulb can be modeled by an exponential distribution with 0.001 (a) What is the average life of this type of light bulb? And determine the probability that a randomly picked light bulb has a life shorter than the average life. (2pt) (b) Determine the probability that a light bulb fails within 1200 hours. (2pt) (c) If 4 bulbs are installed at the same time and work independently in a house, what...

ADVERTISEMENT
Free Homework Help App
Download From Google Play
Scan Your Homework
to Get Instant Free Answers
Need Online Homework Help?
Ask a Question
Get Answers For Free
Most questions answered within 3 hours.
ADVERTISEMENT
ADVERTISEMENT