The average running times of disks produced by Company A is 88.1 minutes and a standard deviation of 6.1 minutes, while Company B obtained a mean running times of 99.3 minutes with a standard deviation of 13.6 minutes. Assume the population are approximately normally distributed. Solve the probability when a random sample of 41 disks from Company B has a mean running times that at most 15 minutes more than the mean running times of a random sample of 32 disks from Company A.

Q: Determine the number of 10-permutations of the multiset {4.a, 4.b,5.c}

A: Given: 4.a, 4.b, 5.c n = total number of objects r = number of objects selected   Formula:…

Q: 2. If X-N(u-3, o²-2). Find the distribution of the following: c. V= 2-4X 5

A: Given distribution is normal distribution X~N(μ=3,σ2=2)

Q: In a study of color perception, 132 men are tested, and 48 are found to have red/green color…

A: Here, n=132 and x=48. 1. np^1-p^=132×48132×1-48132                =30.5454

Q: Fill in the 2-way table (exact numbers, no spaces). A survey of 500 people included 270 Female…

A: From the given information we find the probability.

Q: A computer manufacturer is interested in comparing assembly times for two keyboard assembly…

A: Claim : the company conclude that the mean assembly time for Process 2 exceeds that of Process 1

Q: Which univariate graph for frequency would be reasonable to use to depict continuous data? Histogram…

A: Histogram is a graphical representation to display continuous data. In histogram, there is no gap…

Q: Question 12 The boxplot below shows salaries for CPAS and Actuaries in a town. CPA Actuary 20 30 40…

A: Given Q1 of CPA 35 thousands Q1 of actuaries is 65 thousands

Q: Create a set of three numbers with a mean of 5 and a standard deviation of 5.

A:

Q: Suppose a student is selected at random from 100 students where 30 are taking ME, 20 are taking EE,…

A:

Q: For the distribution N(9,3) match the probabilities below: P(X 8) P(X < 11) [Choose ] [Choose ]…

A: Hey there! Thank you for posting the question. Since your question has more than 3 parts, we are…

Q: A pediatrician wants to determine the relation that may exist between a child's height and head…

A: The given data is Height, x Head circumference, y 27 17.5 27.5 17.5 26.75 17.3 26.5 17.3…

Q: If a light bulb manufacturing company wants to​ estimate, with 90​% ​confidence, the mean life of…

A: The question is about sample size estimation Given : No. of hours within mean life of bulbs lies ( E…

Q: If X=72​, σ=13​, and n=66​, construct a 95​% confidence interval estimate of the population​…

A:

Q: what is teh regression equation  for  (2,44), (5,66), (4,57), (8,86) ,(5,67) where x is snowfall and…

A: Given data is(2,44)(5,66)(4,57)(8,86)(5,67)where x=snowfally=yield x (snowfall) y (yield) 2 44…

Q: Big chickens: The weights of broilers (commercially raised chickens) are approximately normally…

A: The mean is 1521 grams and the standard deviation is 166.

Q: f n=200 and X=80​, construct a 99​% confidence interval estimate for the population proportion.

A:

Q: Working at home: According to the U.S. Census Bureau, 34% of men who worked at home were college…

A: It is given that n=500 and the sample proportion p-hat is0.34.

Q: The Random Variable X counts the number of students who passed a test in a class of 18 students. If…

A: Solution-: Given: n=18,p=0.457 We want to find P(X=2)=?

Q: If, in a sample of n = 30 selected from a normal population, X= 57 and S=20, what is your…

A: Given Population mean = 50 Sample mean =57 Sample standard deviation =20 We have to answer for…

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 following data represents the age of 30 lottery winners.   23 27 29 30 31 33 33 34 41 43 43 43…

A:

Q: The percentage of alcohol in the cough syrup was measured in 101 randomly selected samples. The…

A: Here given, n = 101 S = Sample standard deviation  = 0.10 Here calculate confidence interval for…

Q: Data table for Liver Cancer Liver Cancer Exposure to solvents Yes No Total 3 104 107 2 601 603 Yes…

A: Risk ratio is a measure that used to measure the exposed among the disease. Risk ratio is calculated…

Q: X is the Binomial Random Variable which counts the number of students who passed an exam. If the…

A: Here, n=46 and p=0.89.

Q: A credit card company claims that the mean credit card debt for individuals greater than $5,200. You…

A: N=26 Dof= n-1=26-1=25 Population mean =5200 Sample mean =5398 Level of significance =0.0 We have to…

Q: What is the median number here?     4.88, 4.62, 4.38, 5.02, 6.30, 5.33

A: Given data 4.88, 4.62, 4.38, 5.02, 6.30, 5.33

Q: In a two-sample t-test of significance to compare two population means, two samples were taken from…

A: From the provided information,

Q: Treatment Treatment Treatment A B с 32 45 32 30 44 35 30 45 34 26 47 35 32 49 39 Sample mean 30 46…

A:

Q: To test the similarity of variance of the two populations I and II, a sample of 10 were taken from…

A: Given that: Sample sizes: Sample taken from Population I, n1=10 Sample taken from Population II,…

Q: The head start program provides a wide range of services to low-income children up to the age of 5…

A: Solution Given information

Q: A custodian wishes to compare two competing floor waxes to decide which one is best. He believes…

A: Formula : Test statistic :

Q: A company wants to test the claim that their batteries life time is 40 hours. Using a simple random…

A: Given : Claim : Batteries life time is 40 hours Sample size (n) = 15 Sample mean (X¯) = 44.9 hours…

Q: A stock investor would like to have an idea concerning the average return of stocks that are traded…

A: From given data n=96 mean=9% standard deviation=9% confidence interval=99%

Q: a. Explain what it would mean to make a type I error. Choose the correct answer below. A. A type I…

A: Hey there! Thank you for posting the question. Since your question has more than 3 parts, we are…

Q: Identify the median confidence in education for those who identify as white individuals? 2.22 1.78 4…

A: Given data 2.22 , 1.78 , 4 , 2

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

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

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

A:

Q: A survey of nonprofit organizations showed that online fundraising has increased in the past year.…

A: We have to find confidence interval for population mean (μ) Since population standard deviation is…

Q: Explain the method of retrospective study for collecting data. Consider the semiconductor wafer data…

A: Given data n=10 wafers are selected randomly(without replacement)

Q: P-value is not 0.0156.

A: The F-test statistic value for the treatment is 6.60.

Q: false positive results; among 151 negative results, there are 5 false negative results. If one of…

A: Given Total marijuana is 296

Q: An experiment consists of flipping a coin and then rolling a die. What is the probability of…

A: Flipping a coin and a die  Sample space = S  S = ( T1 , T2 , T3 , T4 , T5 , T6 , H1 , H2 , H3 , H4 ,…

Q: 1 and 121 The probabilities that students A, B, C, D solve a problem are 3' 5'5 respectively. If all…

A:

Q: 1. What characteristics must a normal probability distribution have to be a standard normal…

A: Here we use the concept of standard normal distribution.        Note : according to bartleby…

Q: A bottled water distributor wants to estimate the amount of water contained in 1​-gallon bottles…

A: According to the given information, we have Confidence level = 99% Sample mean = 0.983 Sample…

Q: Which of the following samples taken from the sample 10, 20, 30, 40, 50 could be a bootstrap sample?…

A: * SOLUTION :-

Q: The average number of kilos of meat a person consumes in a year is 110 kilos. Assume that the…

A: 1)GivenMean(μ)=110standard deviation(σ)=12sample size(n)=45

Q: For a data set of chest sizes (distance around chest in inches) and weights (pounds) of eleven…

A: Given datan=11r=0.861

Q: Two containers, labeled A and B, are filled with red and blue marbles according to the quantities…

A:

Q: A civil engineer is analyzing the compressive strength of concrete. Compressive strength is normally…

A: Given X-bar=3226 n=12 Standard deviations=31.62