Math

ProbabilityQ&A LibraryAccrotime is a manufacturer of quartz crystal watches. Accrotime researchers have shown that the watches have an average life of 32 months before certain electronic components deteriorate, causing the watch to become unreliable. The standard deviation of watch lifetimes is 5 months, and the distribution of lifetimes is normal. (a) If Accrotime guarantees a full refund on any defective watch for 2 years after purchase, what percentage of total production will the company expect to replace? (Round your answer to two decimal places.) %(b) If Accrotime does not want to make refunds on more than 12% of the watches it makes, how long should the guarantee period be (to the nearest month)? monthsStart your trial now! First week only $4.99!*arrow_forward*

Question

Accrotime is a manufacturer of quartz crystal watches. Accrotime researchers have shown that the watches have an average life of 32 months before certain electronic components deteriorate, causing the watch to become unreliable. The standard deviation of watch lifetimes is 5 months, and the distribution of lifetimes is normal.

(a) If Accrotime guarantees a full refund on any defective watch for 2 years after purchase, what percentage of total production will the company expect to replace? (Round your answer to two decimal places.)

%

(b) If Accrotime does not want to make refunds on more than 12% of the watches it makes, how long should the guarantee period be (to the nearest month)?

months

%

(b) If Accrotime does not want to make refunds on more than 12% of the watches it makes, how long should the guarantee period be (to the nearest month)?

months

Tagged in

Math

Probability

Find answers to questions asked by students like you.

Q: It is estimated that 90% of all 19-year-old men have weights ranging from 117 to 207 lb. Assuming th...

A: We are given:Range of weights from 117 to 207.Also, Probability that range is 0.90.We have to find μ...

Q: can donate blood to Mike? (c) What is the probability that a randomiy closen A does not have type B ...

A: Given:

Q: The question is 6.12. A, B, C, and D go to 6.12 but just fall on a different page. Part D. also corr...

A: As per the questionThe possible values of X are as followsWinning both the bid i.e. (W,W) = $30 + $2...

Q: In how many ways can first and second prize be awarded in contest with 100 people, assuming that eac...

A: There are 100 students in the contest.

Q: Suppose three fair coins are tossed and the number of heads that appear is recorded. What is the pr...

A: Suppose three fair coins are tossed and the number of heads that appear is recorded. What is the pr...

Q: Find the variance of the random variable Y where 3 )2,0y < 2 fr(u) 8

A: The given that the probability density function of the random variable Y is,

Q: During the Computer Daze special promotion, a customer purchasing a computer and printer is given a ...

A: Since we have given thatNumber of free software packages is given as a choice =6Total number of diff...

Q: A recent survey found that 86% of first-year college students were involved in volunteer work at lea...

A: The provided information are:Proportion of first-year college students were involved in volunteer wo...

Q: Cana valid argument have a false oremise and a false conclusion? false premise and trueconclusion? t...

A: The question concerns the truth table for p implies q , for all possible values of p and q

Q: 4. Suppose X1,... , Xn is a random sample of size n drawn from a Poisson pdf where A is an unknown p...

A: Suppose, a collection of samples X1, X2 ,…, Xn that have been drawn from some fixed probability dist...

Q: The CDC estimates that a non-infected person has a 10% chance of contracting mumps from an infected ...

A: The random variable X follows geometric distribution with probability 0.10. The geometric distributi...

Q: Now you will compute some probabilities of events that are unions of intervals inside the sample spa...

A: The length of an interval can be calculated by subtracting both the points of the interval.The lengt...

Q: Consider the following. (a) Draw a tree diagram to display all the possible outcomes that can occur ...

A: a).The required tree diagram is given below:

Q: thousandth. PP gs. KOuta to the nearest ) The Amboy Kennel Club has held an annual dog show for the ...

A: Given Number of times Alaskan Malmute won Best of show = 21Number of times Great pyrenees won Best o...

Q: A beverage plant has three lines (line A, line B and line C) for bottling the beverages. Line A bott...

A: Let A be the event of selecting line A, B be the event of sleeting line B and C be the event of sele...

Q: 4. A population has a normal distribution with a mean of 32.9 and a standard deviation of 35.2. Draw...

A: From the given information mean and standard deviations are 32.9 and 35.2

Q: The Downtown Parking Authority of Tampa, Florida, reported the following information for a sample of...

A: We are given a table.

Q: 1. In a recent month, the percent of correct orders of a drive through hamburger restaurant was appr...

A: Binomial distribution:The proportion of correct orders of a drive through hamburger restaurant, p = ...

Q: According to a report, 9.5% of all full-time S.A. undergraduate students study abroad. Assume that 6...

A: Introduction:The full-time female undergraduate students are of two types- those who study abroad, a...

Q: A crowd of 28,760 fans will be attending a soccer game. On average 27% of attendees will want to buy...

A: Given,population proportion of success is P = 27% = 0.27n = Number of fans = 28760

Q: Two questions are presented to a contestant on a show. The contestant is to attempt both questions a...

A: The probability of answering the first question correctly is q1 and the probability of answering the...

Q: A survey consists of asking kids in a particular neighborhood how many houses they visited while tri...

A: Probability:The formula for probability of an event is,

Q: Suppose that Pr[A|B]=4/7, Pr[B|A]=8/13, and Pr[A′]=8/21. Find Pr[A∩B′].

A: The provided information is;

Q: 8.5.37 Question Help game has an expected value to you of $500. It costs $500 to play, but if you wi...

A: From the given information, game expected value is $500, winner receive $100,000.Let p be the probab...

Q: question (b) make it very detailed

A: As per the questionGiven p.d.f of fx(x) is

Q: in the attached, I only need help with the last three parts. E, G, and H thanks

A: According to the provided data, the square footage is the explanatory variable and selling price is ...

Q: 9. A Gallup poll conducted May 2-7, 2013, by telephone interviews (both landlines and cellular phone...

A: Z score corresponsing to probability of 0.975 = 1.96

Q: Can I have this completed problem explained step by step it is complete but I need more info as to h...

A: Note:Hey there! Thank you for the question. It was a little difficult for us to understand the quest...

Q: A fair coin is tossed 3 times. Let the random variable X denote the total number of heads that appea...

A: Consider a random variable X which represents the total number of heads that appear squared plus two...

Q: Let the random variables X and Y have a joint PDF which is uniform over the triangle with verticies ...

A: Hey, since there are multiple subpart questions posted, we will answer first three subparts question...

Q: Step 1: License plates in Florida have the form A12BCD, that is, a letter followed by two digits fol...

A: Form of License plates A12BCD Total alphabetical letters are 26 A-ZTotal numerical are 0- 9

Q: Harley-Davidson motorcycles make up 14% of all the motorcycles registered in the United States. You ...

A: It is given that, Harley-Davidson motor cycle make up 14% of the motor cycles registered in US. That...

Q: Suppose you buy 1 ticket for $1 out of a lottery of 1,000 tickets where the prize for the one winnin...

A: From the given information,Probability of wining lottery is = 1/1000.Probability of not wining lotte...

Q: Can you please answer this question and show the steps

A: Concept of General Addition Rule:For any two events A and B the General Addition Rule state that:

Q: How to construct truth tables and understand how to do them

A: Construct a truth table for the statement: First construct the table 1:

Q: A raffle is being held to benefit the local animal shelter. They sell 513 tickets that do not win a...

A: Expected value:The expected value of a random variable is the sum of the possible values that the ra...

Q: A group of 11 people consisting of 2 freshmen, 1 sophomores, 4 juniors, and 4 seniors are selected f...

A: Given:A group of 11 people consisting of 2 freshmen, 1 sophomores, 4 juniors, and 4 seniors are sele...

Q: (Part a) Can we have an event A that has negative probability? Explain your answer. (Part b) Conside...

A: To discuss (1) the possibility of negative probabilities and (2) the negagtion of an event

Q: Step 1: In designing a security system for its accounts, a bank asks each customer to choose a five-...

A: 1. The first digit can be filled in 9 ways because 0 is not possible as first digit as it will make ...

Q: A credit card company gives each of its customers a 4-digit PIN where each digit is selected from 0,...

A: Multiplication rule of counting:If a task consists of a sequence of choices in which there are ‘a’ w...

Q: A company is hiring a chef, a prep and a waiter. 5 equally qualified applicants applied. John is one...

A: (a)The probability that he will be the Chef is,

Q: A die is rolled and a coin is flipped simultaneously. The number rolled on the die and whether the ...

A: Total possible outcomes for a die rolled = 6 Which is 1,2,3,4,5,6 Total possible outcomes for a flip...

Q: A telephonist claims that he gets 10 calls every five minutes. To demonstrate this to his boss he ma...

A: Given that, Average 10 calls (μ=10)Here, we can use Poisson distribution

Q: A standard 5-card poker hand is drawn simultaneously from a deck of 52 cards. You draw a “flush” if ...

A: Introduction:The probability of an event in an experiment is the number outcomes in the experiment t...

Q: The probability that a part produced by a certain factory's assembly line will be defective is 0.013...

A: We are given that the probability that a part produced by a certain factory's assembly line will be ...

Q: 8. Bob plan to retire in 20 years. He is thinking of investigting his retirement funds in stock mark...

A: Given dataMean = 8.2Standard deviation = 20.1 percentProbability that the return next year would be ...

Q: Please, help me with a step by step solutions to question and I will be very grateful to you. I don'...

A: As you have posted 2 different questions, we are answering the first question. In case you require...

Q: Assume that the box contains balls numbered from 1 through 26, and that 3 are selected. A random var...

A: As per the question, the number can be either odd or even and 3 are selectedSo total possible combin...

Q: Assume that hybridization experiments are conducted with peas having the property that for offsprin...

A: It is provided that hybridization experiments are conducted with peas having the property that for o...