In two factories A and B loeated in the same industrial area, the average weekly wages (in rupees) and the standard deviations are as follows : Factory Average Standard Deviation No. of workers 34.5 476 28.5 4.5 524 1. Which factory A or B pays out a larger amount as weekly wages : 2. Which factory A or B has greater variability in individual wages :

Q: Increasing the sample size will widen the confidence interval of the population proportion p O True ...

A: We have given that,  Increasing the sample size will widen the confidence interval of the population...

Q: Exercise C The grades of 32 students daring the First Grading Period in Mathematics are aas follow 8...

A: Given data: 85,82,80,78,85,82,80,78,84,81,80,78,84,81,79,78,84,81,79,78,83,81,79,77,83,81,79,76,82,8...

Q: * (i) Let X,, .... X, be a random sample from the distribution with the PDF S(x: 0) = 2.r for 0<x<0....

A:

Q: 67. Calculate the geometric mean of the following data : Wages 55-65 65-75 75-85 85-95 95-105 105-11...

A:

Q: 2. In an attempt to reduce the number of man-hours lost as a result of hospital accidents, a large h...

A: Given that :    We have to find d..What statistical test we use in the given problem... e..The Crit...

Q: “SmartB” owns a phone battery assembly line which provide phone battery to a mobile company. It is k...

A: Given:  n = 28 p = 4%

Q: It has been claimed that 30% of students in a particular school dislike mathematics. When a survey w...

A: Given,n=600x=153p^=xnp^=153600=0.51α=0.5

Q: (B) Flow fate was mC pred for a week, and the following values were recorded as gai/min: 9.7, 8.8, 1...

A:

Q: An automobile is being filled with petrol. The probability that oil is also need to be changed is 0....

A: If a certain condition is imposed on happening of an event, then the probability of happening of tha...

Q: Example 36. dx

A:

Q: Pain: A recent survey asked 830 people how many days they would walt to seek medical treatment if th...

A: Number of Days Frequency 0 28 1 437 2 263 3 75 4 16 5 11 Total   830

Q: The time to fáilure (in hours) of a piece or equipment over (0, 1000) hours. (a) Determine the MTTF....

A:

Q: Five males with an X-linked genetic disorder have one child each. The random variable x is the numbe...

A: Given data is x P(x) 0 0.033 1 0.156 2 0.311 3 0.311 4 0.156 5 0.033  

Q: Refer to the data set 3.94, 1.47, 2.06, 2.36, 3.74, 3.43, 3.78. Find the 2nd decile. B. 2.06 C. 2....

A: Arrange the given data in ascending order1.47 , 2.06 , 2.36, 3.43 , 3.74 , 3.78 , 3.94sample size (n...

Q: II. Find the sample mean, sample variance and sample standard deviation of the given data sets. 1.4 ...

A: As per our guidelines we are suppose to answer only one question. Given data is4, 7, 10, 13, 17, 21,...

Q: The time to repair of an equipment follows a lognormal distribution with a MTTR of 2 hours and a sha...

A:

Q: An automobile is being filled with petrol. The probability that also need to be changed is 0.25, the...

A: Given data,Let A be the event that oil need to be changedLet B be the event that new filter is neede...

Q: A bag contains 3 red, 6 white and 7 black balls. What is the probability that two balls drawn are wh...

A:

Q: 1. Aggregate risk S comes from compound Poisson random variable with N- P(200) and individual claims...

A:

Q: Five hundred children participaied in a field demonstration. Their heights average 110 cm with a sta...

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

Q: In an experiment, college students were given either four quarters or a $1 bill and they could eithe...

A: Given data is   Purchased Gum Kept the money Total Students Given four Quarters 30 13 43 stud...

Q: Insurance: An insurance company sells a 1-year term life insurance policy to an 76-year-old woman. T...

A:

Q: There are 400 students in the first year class of an engineering college. The prob- ability that any...

A:

Q: From the following data of age of employecs, calculate coefficient Example: of skewness and comment ...

A: Mean = ΣXi*fi/Σfi = (25*8+30*20+35*40+40*65+45*80+50*92+55*100)/(8+20+40+65+80+92+100) = 45.679 Here...

Q: Sample distribution of variance follows a Chi-Square distribution with n-1 degrees of freedom True O...

A: Chi square distribution is a sampling distribution of variance.

Q: (d) Compute the mean u. Round the answer to two decimal places. Hx

A:

Q: Let X be a random variable with finite expectation u and variance o?. Let X be the sample mean, base...

A:

Q: The cumulative probability of a Chi-Square distribution runs left to right. 0 is on the right, and 1...

A: Solution-: The cumulative probability of a chi-square distribution runs left to right 0 is on the ri...

Q: Problem 5.15 (MT-IB 1997-203G short) Explain what is meant by a sufficient statistic. Consider the i...

A:

Q: Example 5. In the bending of an elastic beam the normal stress y at distance x from the middle secti...

A: Solution is given: Dear student hope the solution is helpful.

Q: 9. You are given the following information about advertising expenditure and sales: Adv. Exp. (X)- S...

A: By regression we mean estimation or prediction of the average value of one variable for specified va...

Q: Below you are given ages that were obtained by taking a random sample of 6 undergraduate instructors...

A:

Q: When is the unexplained variation (that is, error sum of squares) equal to 0? Choose the correct cho...

A: The error sum of squares is equal to zero when,

Q: You work for the U.S. Food and Drug Administration. You have gotten word that a drug manufacturing i...

A:

Q: A telephone company is planning to install telephone booths in a new airport. It has established the...

A:

Q: Find the variance and standard deviation. Round the variance to two decimal places and standard devi...

A: Given A binomial experiment has the given number of trials n and the given success probability p. n=...

Q: ) Consider the model y, = B, + B,x, + B,x + €,. for Isisn, where x,, .. . , are given values, with x...

A:

Q: Let X ~ N(H, o²) and suppose h(x) is a smooth bounded function, xE R. Prove Stein's formula E[(X – µ...

A:

Q: Suppose that the duration of a particular type of criminal trial is known to be normally distributed...

A: Given: Mean = 24 Standard deviation = 6  

Q: } Let X. .... X, be a sample from a uniform distribution on [0, 0], where 0 e [1, 2] is an unknown p...

A:

Q: Suppose a box contains 7 red balls & three blue balls. If 5 balls are selected at random without rep...

A: Hypergeometric distribution is given by  

Q: Assume the random variable Xhas a binomial distribution with the given probability of obtaining a su...

A: Given;X~binomial(n,p)where, number of trials(n)=5and probability of success(p)=0.6find P(X≤1)=?we kn...

Q: 3. The table below shows the number of skilled and unskilled workers in two small communities, toget...

A:

Q: Example 2 Draw a frequency polygon for the following frequency distribution. C.I.: 10-20 20-30 30-40...

A:

Q: If a school district takes a random sample of 80 Math SAT scores and finds that the average is 497, ...

A:

Q: V. Find the variance and standard deviation. Show your solution. 1 0.19 P(x) 0.09 0.39 0.22 0.11

A: Let X be the random variable having probability mass function is,  X 0 1 2 3 4 P(X)  0.09 0.19 ...

Q: (a)  What is the probability that there are exactly 2 defective phone batteries in the sample? (b) ...

A: Here AS PER POLICY I HAVE CALCULATED 3 SUBPARTS 

Q: The following figure is a probability density curve that represents the grade point averages (GPA) o...

A: In question, We have given a probability density curve of a GPA of graduating seniors at a large Uni...

Q: Using the General Social Survey of 2012, determine if there is sufficient evidence to infer that the...

A: In the given case we have the data about the number of hours spent by an American watching TV. The c...

Q: Using the TI-84 calculator, find the area under the standard normal curve that lies outside the inte...

A: The mean is 0 and the standard deviation is 1.