sections

Q: Statistics Question

A: Hello, Thanks for posting your question here. I think you have posted your entire assignment which h...

Q: If x the mean of 12 determinations = 9.79, and μ the true value = 9.03, find out whether or not this...

A: From the provided information, Sample size (n) = 12 Sample mean (x̅) = 9.79 Sample standard deviatio...

Q: Assuming the selection is random, find the probability the student carries a credit card given that ...

A: Class Credit card carrier Not a credit card carrier Total Freshman 45 15 60 Sophomore 32 8 40 ...

Q: 6. The coefficient of correlation between x and y is r = 0.59. Calculate the coefficient of determin...

A: It is given that, The coefficient of correlation between x and y is, r= 0.59  

Q: write this problem in expression form

A: Given equation is : X = -2 + 74 We have to solve it in expression form  

Q: Plzz solve 5,6

A: As per our answering guidelines, we are supposed to answer only one question in case of multiple que...

Q: Suppose that Harry and Ron take an exam for which the mean score is 60 and the score of standard dev...

A: Given information- Population Mean µ = 60 Standard deviation (σ) = 10 Harry's score = 80  

Q: The manager of human resource department wants to see if there is anyrelationship between staffs’ sa...

A: Hey there! Thank you for posting the question. Since you have posted a question with multiple sub-pa...

Q: Q5- The weekly average number of airplane crashes is 3. Whatis the probability that there will be (a...

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Q: Q2: Please answer all sections

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Q: A bus comes by every 10 minutes. The times from when a person arives at the busstop until the bus ar...

A: Note: Hi there! Thank you for posting the question. As there are multiple sub parts, according to ou...

Q: To compare customer satisfaction levels of two competing ice cream companies, 8 customers of Company...

A: We need to find 95 % confidence interval for difference of means of two ice cream companies.    

Q: Prepare a frequency distribution table to present the blood pressure of 32 patients who visited the ...

A: The following below is the arranged data in the ascending order ( smallest to the largest)  Data...

Q: 2 students applied 2 different methods to determine the content of melamine in milk. The variance of...

A: Given that, n1= 11, sigma1 = 6.5 n2= 6 , sigma = 4.3  

Q: A research company wants to know what will happen to the company's  R&D spending in the next yea...

A:   Questionnaires go to 940 companies and they submit the following responses: Higher (260); Lower (2...

Q: Q) In a video game factory, machines A, B and C manufacture 20%, 30% and 50% of the total output, re...

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Q: The following data represent the age distribution of a sample of 70 women having multiple-delivery b...

A: Given, The age frequency distribution, Lower limit Upper Limit Midpoint(x) Number(F) Cumulative F...

Q: Graph the mean of the following 10 samples (thickness of washers, coded values) on a control chart f...

A: Given, Mean, μ = 5 Standard deviation, σ = 1.55 Sample size, n = 4 CL for mean chart = E(X) = μ = 5 ...

Q: Weights (in lb) of pro football players: x1; n1 = 21 243 261 254 251 244 276 240 265 257 252 282 ...

A: Given Information: Weights (in lb) of pro football players: x1; n1 = 21 243 261 254 251 244 276 2...

Q: Differentiate Probability and Non-Probability Sampling Techniques. Probability Sampling Techniques-...

A: Differentiate Probability and Non-Probability Sampling Techniques. Probability Sampling Techniques-...

Q: Q2-If the density function of X is fx(x) = x = 1,2, ... 0.W S-4 if X is odd What is the probability ...

A: It is an important part of statistics. It is widely used. 

Q: Let Y1, Y2, ..., Y, be a random sample with E(Y,) = µ and V (Y,) = o². Show that is a biased estimat...

A: E(S2) = (n-1/n)* sigma2  =! Sigma2  So it is biased estimator for sigma2

Q: Exercise 2. Value of Education. The following table shows median annual earnings (in 2011) for women...

A: Given: Men with a bachelor's degree earn = 66196 Women with a bachelor's degree earn = 49108

Q: A turnpike toll area contains four toll booths arranged in parallel. The arriVing vehicles conformto...

A: Arrival Rate  = λ = 6012 = 5 vehicle/min Service Rate = μ = 605 = 12 vehicle/min  

Q: Eleven sales executive trainees are assigned selling jobs right after their recruitment.After a fort...

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Q: Define statistics

A: .Statistics : It is a branch of applied mathematics and may be regarded as mathematics applied to ob...

Q: The probability that a drilling machine will malfunction on any given day is 0.0823. What is the p...

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Q: Give the resulting rate when two independent Poisson processes with rates λ1=2.546 and λ2=3.326 are ...

A: If two independent Poisson processes of rates λ1 and λ2 are merged, such that  N(t) = N1(t) + N2(t) ...

Q: With your 13th month pay of ₱25,000, you plan to buy a new laptop that costs exactly ₱25,000, but yo...

A: Given, P = 25,000 Rate of interest = 4% compounded monthly Time = 1 year To calculate compounded amo...

Q: The number of bears killed in 2010 for 49 counties in Pennsylvania is shown in the frequency distrib...

A: the data is given by : Class boundary Frequency 0.5-25.5 17 25.5-50.5 11 50.5-75.5 5 75.5...

Q: A researcher claims that  90 percent of people trust SWAB testing.  In a survey of 100 students, 91 ...

A: Solution: Given information: n= 100 Sample size of students  x=91 students trusted SWAB testing. p^=...

Q: Compute a 99%C.I. on average quarter weights 99% C.I for Average Quarter Weight (use 4 decimal place...

A: (A) Obtain the degrees of freedom. From the information, given that there is a sample of 50. The deg...

Q: Drawing a Card If one card is drawn from adeck, find the probability of getting these results.a. An ...

A: As per the guidelines we are allowed to solve maximum of 3 subparts If you need help with other subp...

Q: Which statement is correct about a p-value? The result is statistically significant when p-value is ...

A: The p-value in hypothesis testing is the probability of obtaining a test statistic value at least as...

Q: The 20 brain volumes (cm3) from Data Set "IQ and Brain Size" in Appendix B vary from a low of 950 cm...

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Q: HW20: Please answer all sections

A: Given information Hypothesized mean µ = 4 Sample size (n) = 84 Mean x̅ = 3.85 Standard deviation (s)...

Q: Find Karl Pearson's coefficient of correlation r: byx 1.20,bry =0.60 Select one: O A. 0.60 O B. None...

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Q: The following data represents the age distribution of a sample of 100 people covered by Health Insur...

A: Given:   Age Number (f) 25-34 23 35-44 29 45-54 28 55-64 20

Q: hi could you please help solve this question? Thanks

A: Dear Student, As this question has multiple parts, we are allowed to solve only the first three-part...

Q: Following are the published weights (in pounds) of all of the team members of the San Francisco 49er...

A: Solution: The weights of all of the team members of the San Francisco 48ers from a previous year are...

Q: SAT scores have a mean of 500 and a standard deviation of 100. Let’s continue with the above example...

A: Given information :  Mean = x = 500 Standard deviation = σ = 100 level of significance = α = 0.05 Zα...

Q: Fit the best curve (y = a + b x) to the following data, also estimate the stopping distance at 45 mp...

A: From given data, X Y X*Y X*X 30 150 4500 900 40 195 7800 1600 50 245 12250 2500 60 300 18...

Q: Compute 98% confidence intervals on the average weight of Regular Pepsi based on the computer printo...

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Q: Q) In a video game factory, machines A, B and C manufacture 20%, 30% and 50% of the total output, re...

A: Let, A = event that machine A manufactures video game, B = event that machine B manufactures video g...

Q: A confidence interval for uniform distributionsLet X1, . . . , Xn be i.i.d. uniform random variables...

A: Hi! Thank you for posting the question. Since you have posted multiple questions, we are answering f...

Q: A random sample of 20 households was selected as part of a study on electricity usage, and the numbe...

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Q: Which is the best practice for using units of measurement in spreadsheets?   Question 32 options: ...

A: In excel the data may include many variables, so it is not advisable to include the measurement unit...

Q: A sample of n=11 scores has a mean of M=9. If one new person with a score of X=4 is added to the sam...

A: Given that, A sample of n=11 scores has a mean of M=9. One new person with a score of X=4 is added t...

Q: Which one of the following conclusions could be drawn from a descriptive study? Question options: ...

A: Descriptive study: They are based on quantifiable information. This information can be used for the ...

Q: When the necessary conditions are met, you are testing the hypotheses H0: (μ1 - μ2) = 0; H1: (μ1 - μ...

A: P - value :  The P value, or calculated probability, is the probability of finding the observed, or ...