7. From the data given below, fit a straight line trend by the method of least squares : Years 1975 1976 1977 1978 1979 1980 1981 1982 Sales (00,000 Rs.) 6.7 5.3 4.3 6.1 5.6 7.9 5.8 6.1

Q: The cdf of a continuous RV X is given by F(x) = 0, x x 5- = 1, x 2 3 Find the pdf of X and evaluate...

A:

Q: 48 73 57 69 88 12 80 82 47 46 70 49 75 81 36 65 38 59 94 59 62 58 69 45 55 58 65 30 49 73 41 53 37 3...

A: Data given  48,73,57,69,88,12,80,82,47,46,70,49,75,81,36,65,38,59,94,59,62,58,69,45,55,58,65,30,49,7...

Q: and Solve each problem. a) In a contest, there ar

A: Permutations: r is selected among n choices without replacement when order matters nPr =n!(n-r)! Com...

Q: A collar manufacturer is considering the production of a new type of collar to attract young men. Th...

A:

Q: Question: A, B and C are bidding for a contract. It is believed that A has exactly half the chance t...

A:   Given problem Given that   A, B and C are bidding for a contract. It is believed that A has exactl...

Q: What is the average number of times a drawing must be examined by a client before it is accepted?

A: The average or expected value of X is defined as E(X) = Σx.P(X = x)

Q: Question: A, B and C are bidding for a contract. It is believed that A has exactly half the chance t...

A: Given: A has exactly half the chance that B has to win B has chance 4/5 of C

Q: The 25% spring breakers who drink the least do not drink more than how many pitchers of beer? 2.500 ...

A:

Q: Find the median from the following table : Marks No. of students Marks No. of students 0-10 2 40-50 ...

A:

Q: A distribution has a population mean of 15 and a population standard deviation of 4. If X is a norma...

A:

Q: A sample analysis of examination results of 500 students was made. It was found that 220 students ha...

A:  To check whether the observed examination results commensurate with the general examination results...

Q: In a community in which R elderly people and people with comorbidities are susceptible to a particul...

A: Given information: It is given that the rate of growth of the spread of the virus was jointly propor...

Q: A professor at Ltts College is interested in the relationship between hours spent studying and total...

A: The scatter plot is a well known graphical method and which is used to detect the association or lin...

Q: A bag contains 3 red marbles and 3 green marbles. A first marble is draw IR is NOT replaced. A secon...

A:

Q: a. For this study, we should use Select an answer b. The null and alternative hypotheses would be: H...

A: Since you have posted a question with multiple sub-parts, we will solve first three subparts for you...

Q: In a recent study on world​ happiness, participants were asked to evaluate their current lives on a ...

A: Given,mean(μ)=5.2standard deviation(σ)=2.6

Q: An investigator is interested in testing the recovery rate post intervention between a new and an ex...

A: Solution: H0: p = 0.6 H1: p > 0.6 Let n be the sample size. Standard error when p = 0.6, = sqrt(0...

Q: Use Gamma distribution as your prior distribution. Set the parameters of the gamma prior distributio...

A: α 1 β 2 λ 4 n 6 Gamma Distribution: Gamma Distribution uses shape and scale as parameters ...

Q: Question: A, B and C are bidding for a contract. It is believed that A has exactly half the chance t...

A: Here Given  Probability of A bidding=P(A) Probability of B bidding=P(B) Probability of C bidding=P(C...

Q: Find the variance of the given table in the attached photo

A:

Q: A student answers randomly three True (T) or False (F) questions. v Make a list of all possible outc...

A: Given Student answers randomly 3 True (T) or False (F) questions

Q: Based on data from the 2000 Census the average age of a Baldwin County, Alabama resident is 39 years...

A: The appropriate z-score for the average age of 100 sampled residents (i.e., the sample mean) is give...

Q: 35 4. From the data given below, find out the value of Y when X 10 20 30 40 50 60 70 90

A:   X Y X.Y X.X 10 50 500 100 20 60 1200 400 30 70 2100 900 40 90 3600 1600

Q: Diameter of holes for a cable harness is known to have a normal distribution with o = 0.01 cm. A ran...

A:

Q: If the range of X is the set (0,1,2,3,4,5,6,7,8} and P(X - x) is defined in the following table: 0 1...

A:   x (X=x) 0 0.1093 1 0.3630 2 0.03106 3 0.0908 4 0.05120 5 0.0908 6 0.02666 7 0.0...

Q: A collar manufacturer is considering the production of a new style of collar to attract young men. T...

A:

Q: What is the z-score of x = 9 if it is 1.5 standard deviations to the left of the mean? a. z= + 1.50 ...

A: The given information is- x = 9 is 1.5 standard deviations to the left of the mean. So, for this th...

Q: The file contains the amount that a sample of nine customers spent for lunch ($) at a fast-food rest...

A: Here minimum = 4.20 Maximum = 9.87 Range = ? 

Q: An oil company purchased an option on land in Alaska. Preliminary geologic studies assigned the foll...

A: Given Information: Prior probabilities: P(high-quality oil) = 0.55 P(medium-quality oil) = 0.25 P(no...

Q: Are the sample distributions symmetrical? Explain Some statistics books define an outlier in a data ...

A: Given:

Q: Assume that z-scores are normally distributed with a mean of 0 and a standard deviation of 1. If P( ...

A: Solution

Q: Data X Data Y Data Z 25 25 25 Time left 0:4- 20 20 20 15 15 10 10 10 5 5 5 1 2 3 4 5 6 7 8 9 10 1 2 ...

A: The standard deviations and median are to be inferred from the plotted graphs, through visual inspec...

Q: 3 In a community in which R elderly people and people with comorbidities are susceptible to a partic...

A: @solution::: thank you for asking this question. you are solution is next step .  

Q: A local bank reviewed its credit card policy with the intention of recalling some of its credit card...

A:

Q: (a) For a group containing 100 observations, the arithmetic mean and standard devia- tion are 8 and ...

A:

Q: What is the probability that the 49 fly balls traveled an average of less than 240 feet?

A: Suppose that the distribution of fly balls hit to the outfield (in baseball) is normally distributed...

Q: Question: A, B and C are bidding for a contract. It is believed that A has exactly half the chance t...

A: Given that  P(A)=(1/2)*P(B) P(B)=(4/5)*P(C)  

Q: The mean life time of a sample of 400 fluoroscent light bulbs produced by a company is found to be 1...

A:

Q: From which company does Gabriel more likely to get an offer of Php 45,000 or more? Explain your answ...

A: here given,  Company X offers a starting salary per month with a mean of Php 39,000 and a standard d...

Q: A researcher would like to determine the proportion of cities that has a semiautomated waste managem...

A: Obtain the sample size of a no preliminary estimate for p.   The formula of sample size is, Use EXC...

Q: True or False. The events F = {candidate is female} and E = {candidate has less than 10 years' exper...

A:

Q: A normal distribution has a normal distribution of 70 with a standard deviation of 8. If one score i...

A: Here Given  Mean=μ=70 Standard Deviation=σ=8

Q: Show that 2" – (n+ 1) equations are needed to establish the mutual independence | of n events.

A:

Q: If it costs a dollar to draw one number of a sample, how much would it cost in sampling from a unive...

A: Given that the cost of drawing a sample of size one is $1. The problem needs to find the cost incurr...

Q: A research study was conducted to examine the clinical efficacy of a new antidepressant. Depressed p...

A: The given data is based on a research study to examine the clinical efficacy of a new antidepressant...

Q: Which of the following are binomial experiments or can be reduced to binomial experiments? a.Testin...

A: Since you have posted multiple sub-parts of question , we will solve first three sub-parts of questi...

Q: In a frequency distribution, the co-efficient of skewness based on quartiles is 0.5. If the sum of t...

A:

Q: Let X1, X2, ..., Xn be n random variables, then (Σ4Χ) - Σ V() + 2 Σ Σ 44 E a; X;) i= 1 a; aj i =1 j=...

A:

Q: A random sample of 50,000 college freshmen in the United States was asked if they prefer taking onli...

A: Introduction: It is required to identify the population, and the possible inference.

Q: 36 45 49 53 55 56 59 61 62 65 67 72 77 80 81 85 91 94 96 98

A: