The probability density function of a random variable Y is given by 24y(10+2y-0.3y²) f, (y) =- 0 < y<10 10000 0, otherwise Suppose a random sample of 40 observations is obtained from this distribution and these are denoted as Y,,Y,,…,Y40 • 40 a) Approximate the probability that the sample sum T = Ey, is between 200 and 250. i=1 b) Approximate the probability that the sample mean Y is less than 5.5.

Q: which of the following  statements is true about probablity (a) A probability of zero means that an…

A: Probability of an event is the chance of occurrence of that event.

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A: Given that  Sample size n =11 Level of significance = ?=0.05

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Q: A…

A:

Q: For the same data set above, if we set our alpha .01, find the critical r from the table:

A: It is given that  Number of observations n = 15 SSx = 4, SSy = 25 and SP = 6

Q: Given that u = 81, o = 20, and n = 49 Find the Probability of the following: a) x 83

A: GivenMean(μ)=81standard deviation(σ)=20n=49

Q: 17. How did you make the determination in Question #16?

A: Correlation coefficient is a measure of statistical association between continuous variables.

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A:

Q: 14. How did you make the determination in Question #13?

A: Using the given figure, we need to given reason of determination made decision  in question #13.

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A:

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A: It is needed to test, whether there is a color preference for the shirts.

Q: 8. What is the value of SSy? (SH

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A: Assume that μ is the population mean.

Q: The average return for large-cap domestic stock funds over certain three years was 7.2%. Assume the…

A: μ=7.2σ=2.2x =5P(X≤5) = PX-μσ≤5-μσ                =PZ≤5-7.22.2                =P(Z≤-1)…

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Q: Design and Analysis of Experiment using the statistical technique one-way Anova. Use Minitab…

A: Given information: The data represents the values of hardness of four blends of paint.

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A:

Q: DETERMINE THE MEAN, VARIANCE, AND STANDARD DEVIATION OF THE FOLLOWING PROBABILITY DISTRIBUTION AND…

A: a. The formula for mean is defined as µ = Σ[xP(x)].

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Q: (c) What is the point estimate (in dollars) of the difference between the population means? $ 840…

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Q: Find the probability that on any given day that there will be at most 7 thousand dollars in sales.

A:

Q: 32. For a two-tailed test with alpha = .05, what is the critical r?

A:

Q: QUESTION 2  Calls reaching a telephone exchange over the past year average 20 per minute. What is…

A: Given that  Average number of calls received per minutes=20

Q: 21. Calculate the Pearson Correlation Coefficient (r): (SHOW YOUR WORK)

A: For the given data ( 21 ) r = ?

Q: Jump to level1 A software company is interested in improving customer satisfaction rate from the 62%…

A: We have given thatn = 238x = 160p̂ = x/n =  160 /238 = 0.1486p = 62% = 0.62

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A: We know that the regular deck card contains 52 cards.

Q: x 3 6 7 8 9 y 27 216 343 512 729 Model the following data with a power formula. You should be able…

A: Introduction: We need to model the given data with a power formula.

Q: Generate 20 random numbers from 1-20 and get the following data. A. Mean B. Median C. Mode

A: According to bartleby policy I have solved first three subparts of this question.

Q: 36. A police officer uses a motion detector to indicate whether a car is traveling faster than the…

A: Given that Based on the given data  Option c is the correct choice  The probability of not issuing a…

Q: If ap A. Give an example (data), Type of Data (Qualitative/Quantitative), of Measurement (Nominal,…

A: The objective is to identify the type of Data and the level of measurement.

Q: The amount of sugar in a Krispy Kream glazed donut is 10 g. Many people feel that cereal is a…

A: Given that  Observation: XX X^2X2 1 10 100 2 14 196 3 12 144 4 9 81 5 13 169 6 13 169…

Q: In a survey conducted by a reputable marketing agency, 248 of 1000 adults 19 years of age or older…

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Q: Find the lower and upper quartiles of the death cases using Interpolation.

A: The given data is,  deaths  32 21 11 9 17 28 8 16

Q: Calculate the standard score of the given X value, X=28.3X=28.3, where μ=26.3μ=26.3 and…

A: Given X=28.3  μ=26.3 σ=28.1

Q: Calculate the relative frequency P(E).

A: there are total 500 novel , n(U ) = 500 no of book read by you  no of novel you read= n(Y) = 150 no…

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Q: QUESTION 6 Using R, generate a graph to represent respondents by length of time they had their last…

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Q: Use the set of observations below to answer items 4 to 9. 239002 75 to- er 78 85 80 82 75 78 79 72…

A: Given data set is 80,82,75,78,79,72,71,59,70,75,78,85,64,74,56,61,75,71,59,64,81,73,74,56,61,85n=26

Q: 9. Calculate the Pearson Correlation Coefficient (r): (SHOW YOUR WORK)

A: Given that    X Y X \cdot YX⋅Y X^2X2 Y^2Y2   2 4 8 4 16   1 3 3 1 9   3 3 9 9 9   6 6 36…

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A: We have to find probability from given score and t score from given probability using t table.

Q: The table summarizes results from 977 pedestrian deaths that were caused by automobile accidents.…

A: Given that    Pedestrian Intoxicated Yes=A Pedestrian Intoxicated No=B Total Driver Intoxicated…

Q: 25. How did you make the determination in Question #24?

A: Using the given figure, we need to test for the significance of correlation coefficient between X…