A mechanic sells a brand of automobile tire that has a life expectancy that is normally distributed, with a mean life of 34,000 miles and a standard deviation of 2400 miles. He wants to give a guarantee for free replacement of tires that don't wear well. How should he word his guarantee if he is willing to replace approximately 10% of the tires

A mechanic sells a brand of automobile tire that has a life expectancy that is normally distributed, with a mean life of 34,000 miles and a standard deviation of 2400 miles. He wants to give a guarantee for free replacement of tires that don't wear well. How should he word his guarantee if he is willing to replace approximately 10% of the tires

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018

18th Edition

ISBN:9780079039897

Author:Carter

Publisher:Carter

Chapter10: Statistics

Section10.5: Comparing Sets Of Data

Problem 14PPS

See similar textbooks

Related questions

Q: 5. Let X₁, X₂, ..., X₁ be a random sample from a Normal (0, 1) distribution. a. Find the Cramer-Rao…

A: Given:X~N(θ,1)f(x)=1πe-12(x-θ)2 ,θ>0

Q: 1 example solution of mean and variance using Hypergeometric Distribution.

A: Hypergeometric Distribution The number of successes in a series of n pulls from a finite population…

Q: Find the following: P( z 1.03).

A: here given z= -1.03 and z= 1.03 here for probability use excel command

Q: 2. The owner of a factory that sells a particular bottled fruit juice claims that the average…

A: Given: population mean(μ)=250sample size(n)=100sample mean (x¯)=248standard deviation(σ)=5

Q: e. What percent of the sample means will be greater than 32.75 but less than 35.25 seconds? (Round…

A: GivenMean(μ)=34standard deviation(σ)=2sample size(n)=13

Q: 3. In genetic investigations, one frequently samples from a binomial distribution. Except that…

A: we have given truncated binomial distribution f(x) = mCxpx(1-p)m-x1-(1-p)m and we have to find the…

Q: You are testing the claim that the proportion of men who own cats is significantly different than…

A: Introduction: It is of interest to test whether the population proportions of men who own cats, and…

Q: . P(3 < X < 5.25) =

A: It is given that X~U(2, 6).

Q: The hypotheses are Ho: The number of hours volunteered is independent of the type of volunteer. HA:…

Q: 3. The annual number of burglaries in a town rose by 50% in 2012 and fell by 10% in 2013. Hence the…

A: According to guidelines, We can solve one question at a time, and three subparts formiste Given,…

Q: Regression. A coach wants to see the relationship between the statistics of practice games and…

Q: Wall thickness of 25 glass 2-liter bottles was measured by a quality-control engineer. The sample…

Q: A random sample of size n=4 packages is chosen from a Fedex courier. Assume that weights follow a…

A: In the given scenario, we need to create a confidence level of 95% for the weight of four FedEx…

Q: In a plant nursery, the owner thinks that the lengths of seedlings in a box sprayed with a new kind…

Q: When only two treatments are involved, ANOVA and the Student’s t-test (Chapter 11) result in the…

A: Here, α=0.05, df1=1, and df2=12.

Q: A student wishes to see if at her school the proportion of underclassmen who do not have have a job…

A: Given,n1=257 , x1=55n2=288 , x2=45p^1=x1n1p^1=55257=0.21401p^2=x2n2p^2=45288=0.15625pooled…

Q: What is the test statistic for this sample? (Report answer accurate to three decimal places.) test…

Q: Given that 12! = 479,001,600, which of the following DOES NOT represent 11! Group of answer choices…

A: Given data 12!=479,001,600

Q: D. 60 percent of all children spend at least how many hours per day unsupervised? hours.

A: Given that X ~ N ( μ = 3 , σ = 1.5 ) μ = 3 , σ= 1.5 Formula for Z-score Z = ( X - μ ) / σ

Q: a. Are both T₁ (X) and T₂(X) unbiased? Show which of them are indeed unbiased.

A: Pdf of Bernoulli distribution f(x)=px(1-p)1-x mean=p variance=1-p

Q: Be sure that you show all your work to reach your answer. Each step must be on a separate line.…

A: Given, In 2018: 78 out of 456 students. In 2019: 67 out of 501 students.

Q: From the data/table above Calculate and discuss** the followings. Please provide the steps for the…

A: firstly, let's arrange the temperature values in ascending order Temp. values 17.7 18.4 19.5 19.5…

Q: It is always good to have as narrow a confidence interval as possible, because a C.I. is an estimate…

Q: Based on the Nielsen ratings, the local CBS affiliate claims its 11 p.m. newscast reaches 54% of the…

A: Given that : Based on the Nielsen ratings, the local CBS affiliate claims its 11 p.m. newscast…

Q: The data below represents the number of customers served by the employees in a certain restaurant…

A: As per our guidelines we are suppose to answer only one question1)Given data…

Q: Which of the following is the best measure of central tendency for sex? Median:2 Mean:1.64 Mode:2

Q: Helping tags: Statistics, Analysis of Relationships Among Variables, Measures of Association, Simple…

Q: The amount of time adults spend watching television is closely monitored by firms because this helps…

Q: 3. In genetic investigations, one frequently samples from a binomial distribution. Except that…

A: Given Information: Consider the given function: fx=mxpx1-pm-x1-1-pm for x ∈1,2,...m

Q: In a recent tennis tournament, women playing singles matches used challenges on 139 calls made by…

A: Given, In a recent tennis tournament, women playing singles matches used challenges on 139 calls…

Q: 3. In genetic investigations, one frequently samples from a binomial distribution. Except that…

A: Binomial distribution The Binomial distribution may be a statistical distribution of the possible…

Q: Imagine you are doing a Related-Samples t-test, and you are on Step Two of the hypothesis test. The…

A: The level of significance is 0.01.

Q: How many students must be randomly selected to estimate the mean monthly income of students at a…

A: Given: population standard deviation(σ)=530Margin of error (E)=124Confidence interval (c)=0.95

Q: The symbol i represents the population mean of all possible sample means of size n. True O False

A: The symbol x̅ represent the population mean of all possible sample mean of size n.

Q: 4. According to researchers, "One of the primary reasons relationships sour is that people stop…

A: The following information has been given: μ=8 n=37σ=5 We need to compute the…

Q: A clinical trial was conducted to test the effectiveness of a drug for treating insomnia in older…

A: Suppose µ is the mean wake time for a population with the treatment.

Q: A leading magazine (like Barron's) reported at one time that the average number of weeks an…

A: Assume that the length of unemployment is normally distributed with population mean of 25 weeks and…

Q: Bolts are manufactured with a nominal length of 5 cm, and it is known from past experience that the…

A: Confidence interval is the range where the true value of parametre happen. It is calculated by the…

Q: Shen took 9 test this year. His mean score was 69 points. How many total points did he earn for the…

A: From the provided information, Shen took 9 test this year that is n = 9 Mean score (x̄) = 69 points

Q: Refer to the rabbit ear lengths data set attached to this question. A fellow researcher believes…

A: The following is the sample data of ear length of 10 mountain cottontail rabbits. 5.4, 5.5 , 6.0,…

Q: A researcher wishes to test the effects of excerise on the ability to complete a basic skills test.…

A: Formula :

Q: If you chose to compute a mean for a variable, which measure of variability would you most likely…

Q: Twelve jurors are randomly selected from a population of 5 million residents. Of these 5 million…

A: Given Information: In a population of 5 million residents, 46% are of minority race. Of the 12…

Q: It is desired to estimate the proportion of cannabis users at a university. What is the sample size…

A: Here, CL=0.95 and E=0.10.

Q: The probability that a randomly selected sociology major received a starting salary offer less than…

A: It is given that the mean is 43256 and standard deviation is 3150.

Q: es ms In a test of the effectiveness of garlic for lowering cholesterol, 45 subjects were treated…

A: Given: n = 45 X = 4.4 s = 17.1 Confidence level = 95% Formula Used: Confidence interval = X ± tsn

Q: A local college recently made the news by offering foreign language-speaking dorms to its students.…

Q: You are interested in finding a 90% confidence interval for the average number of days of class that…

Q: what percentage of data is within 1.5 standard deviations of the mean? What percentage of data is…

A: For the Standard Normal distribution Mean = 0 Variance = 1 , so standard deviation = 1 Use excel…

Q: 3. In genetic investigations, one frequently samples from a binomial distribution. Except that…

Question

Features Features Normal distribution is characterized by two parameters, mean (µ) and standard deviation (σ). When graphed, the mean represents the center of the bell curve and the graph is perfectly symmetric about the center. The mean, median, and mode are all equal for a normal distribution. The standard deviation measures the data's spread from the center. The higher the standard deviation, the more the data is spread out and the flatter the bell curve looks. Variance is another commonly used measure of the spread of the distribution and is equal to the square of the standard deviation.

Expert Solution