The probability distribution shows the number of items a customer buys in a book store and their corresponding probabilities. Find the variance of this distribution. X 1 2 3 5 P(X) 0..60 0.28 0.07 0.03 | 0.02

Q: Construct the confidence interval for the population mean μ.   c=0.90​, x=15.5​, σ=10.0​, and n= 80 ...

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Q: 2 3 4 4 P(x) 27 | 27 1 ? 27 1.

A: Given that , p(0) = 1/27 p(1) = 1/27 p(2) = 5/9 p(3) = x  ( say )  p(4) = 5/27  

Q: A player of a video game is confronted with a series of 3 opponents and a(n) 70% probability of defe...

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Q: For a distribution the distance of the median from the first quartile is five times the distance of ...

A: * ANSWER :-  Based on given information the answer is provided below.  

Q: (b) Determine the logarithm of the y-values so that Y = log y. Draw a scatter diagram of the transfo...

A: The table shows x and y values.

Q: Q. 2. Calculate range and its co-efficient from the following data: Value: 20 28 32 25 15 10 36 40

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Q: In a survey of women in a certain country​ (ages 20−​29),the mean height was 64.3 inches with a stan...

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Q: A high school senior is collecting data on the colleges in which she is interested. Identify the var...

A: a) Type of college is a categorical college as the variable is categorized into Private or public co...

Q: Find the standard deviation of the observations 5, 11, 18, 25 and 41, using mutual differences betwe...

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Q: Example 19-36. If U, = a + bx+cx², prove that 3 U, dx = 2U2 + 12 (Uo- 2U2 + U4) 1 and hence find an ...

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Q: Assume that a randomly selected subject is given a bone density test. Bone density test scores are n...

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Q: Answer A, B , and C please! Show work!

A: Given : n = 12 p = 0.30  

Q: Complete parts (a) and (b) below. The number of dogs per household in a small town Dogs 1 4 Probabil...

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Q: Answer A B and C please! Show work!

A: Given that  n=160 , p=9%=0.09 , q=1-p=1-0.09=0.91 X=the number of people who have access to electric...

Q: If the odds for a certain event are 5 to 19, what is the probability of the event occuring? Write yo...

A: GivenOdds for a certain event are 5 to 19

Q: It is known that 10 out of 15 members of the board of directors of a company are in favor of paying ...

A: We have given that  Success of probability p = 10/15=0.67 Number of trials n=3 X~binomial (n,p)

Q: Assume that a sample is used to estimate a population proportion p. Find the 90% confidence interval...

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Q: A discrete random variate x follows Poisson law. Find P(X> 2) and P(X is at most 2), if it is given ...

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Q: A service agency wishes to assess clients' views of quality service over the past year. Computer rec...

A: Simple random sampling: If a sample of n subjects is selected then every unit in the population has ...

Q: THE ASQ-3 is a standardized screeing tool. Scores on each domian of the screening tool, communicatio...

A: We have given that  Sample size n =25 Population mean μ =48.7 Population standard deviation =9.2  

Q: Find Ginni's coefficient of mean difference for the following observations : 5, 11, 18, 25, 41

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Q: Sixty percent of consumers prefer to purchase electronics online. You randomly select 8 consumers. F...

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Q: Use the confidence interval to find the margin of error and the sample mean.   (1.51,1.97)   Margin ...

A: Given confidence interval is (1.51 , 1.97)

Q: Visualizing Statistical Precision Each graph below shows a scatter plot of an outcome (y or w) over...

A: Given:

Q: The effectiveness of a blood-pressure drug is being investigated. An experimenter finds that, on ave...

A: We have given that,  Sample mean (x̄) = 60.9, standard deviation (s)= 16.9 and sample size (n) = 21 ...

Q: From the chain base index numbers given below, find fixed base index numbers : Year 1995 1996 1997 1...

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Q: Investor Elliot buys shares of stock A for $10,000, while investor Michael takes a short position in...

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Q: "Given: Mean = 30, S.D. = 8, Karl Pearson's coefficient of skewness = 0.4. Find the median and mode....

A: We have given that,  Mean = 30 , standard deviation (S.D) = 8 and coefficient of Skewness = 0.4 Then...

Q: What is z0 if P(Z < z0) = 16.85%? %3D

A: We use standard normal z distribution table to find the required solution. 

Q: are interested in finding a 95% confidence interval for the mean number of visits for physical thera...

A: We have given that data  27 15 14 22 8 22 25 16 10 11 15 20 8 11 Sample size n =14 Mean = sum ...

Q: Question 6: Let A and B be two events such that P(A) = 0.35, P(B) = 0.45, and P(A and B)= 0.1575. Us...

A: We have given that,  A and B are two events with P(A) = 0.35,      P(B)= 0.45 and P(A and B) = 0.157...

Q: As a warehouse manager, it is your responsibility to inspect a large shipment of components for defe...

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Q: Situation 2. Dr. Romero observed the level of motivational behavior of his students and tried to fin...

A: Given information: Student Science Grade Motivational Behaviour 1 Failed 3.46 2 Failed 4.3...

Q: The sample mean calculated from data on the amount spent by 64 customers for lunch at a major Housto...

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Q: Explain the difference between absolute and relative dispersion. If 20 is subtracted from every obse...

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Q: 2. Let events A and B be mutually exclusive events. Suppose P(A) = .29 and P(B) = .32 (a) What is th...

A: GivenP(A)=0.29P(B)=0.32A and B are mutually exclusive events

Q: In a poll of 1000 randomly selected voters in a local election, 691 voters were against fire departm...

A: Solution: n= 1000 Sample size of voters  x = 691 voters were against fire department bond measures. ...

Q: For questions 1 and 2, sketch an appropriate graph as part of your solution. A college entrance exam...

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Q: 7. Suppose 12% of graduates of the Architectural Engineering Technology program take a job outside t...

A: This is a Simple Binomial Probability distribution with n=2 and p=0.12  

Q: A correlation coefficient of 0.5 does not mean that 50% of the data are explained. Comment.

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Q: Find the area between z = -2.86 and z =-1.84 Select the correct response: O 0.0314 O 0.0323 O 0.1432...

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Q: Calculate weighted arithmatic mean from the following: Monthly Salary: 3700 3000 2200 1500 1050 Stre...

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Q: Q4' A Manufacturing Company hat four branches of tattories in Chvna, Turtry, infia and irag all of t...

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Q: Compute the linear correlation coefficient. The linear correlation coefficient for the four pieces o...

A: The data set shows x and y values.

Q: A physician wanted to compare two types of pain relief. One is medication and the other is using pre...

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Q: researcher is interested in finding a 98% confidence interval for the mean number of times per day t...

A: We have given that  Sample size n =106 Sample mean =30.3 Standard deviation =15.4 98% confidence int...

Q: 45% percent of consumers prefer to purchase electronics online. You randomly select 8 consumers. Fin...

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Q: Anna graduated as number 57 out of 362 students. Joshua graduated as number 29 out of 159 students. ...

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Q: for registered voters in the county is μ = 39.7 years with a standard deviation of σ = 12.4.   A sta...

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Q: mple of female skeletons. [The data was provided by Dr. Ayers-Darling, former professor at MVCC.] h...

A:   sample mean (x̄) = Σx/n  =299/10 = 29.9sample mean (ȳ) = Σy/n = 623/10 = 62.3 Sxx = 15.72 Syy = 2...