Using the picture for this grouped data. in km per liter The following frequency distribution was obtained. What is its variance, SD, sample skewness in + interpretation, exact and excess kurtosis of the population in + interpretation, and the sample kurtosis ?

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Q: stration 8,6. Table 8.6 gives the net domestic product by in- dustry of origin as a percentage distr...

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Q: D- -1.64 Round to two decimal places as needed. Use a comma to separate answers as needed.)

A: Given that  Sample size n =900 Sample proportion p^=20%=0.20 Population proportion p=23%=0.23

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Q: Using numbers 6,7,8,9,10,11 a. Create your population distribution function. (a table with x, P(x))...

A: (a). We enter the given values in Excel sheet and every observation have equal Probability.  Here sa...

Q: Suppose public opinion is split 65% against and 35% for increasing taxes to help balance the federal...

A: We have given that  Population proportion p=35%=0.35 Sample size n =500  

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Q: If our data is considered to follow a Normal distribution, then we would expect to find approximatel...

A: We know that, The Empirical rule states that 95% of data observed following a normal distribution li...

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Q: What is the predicted Calculus II grade when the Calculus I grade is equal to 85?

A: Given that  Y = predicted value,  X= explanatory variable  a= slope  b= intercept  a=1.0134   , b=–5...

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A: From the given information, A) probability that more than 2 of 4 randomly selected students have fat...

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Q: The following data lists the ages of a random selection of actresses when they won an award in the c...

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Q: Legal researchers were interested in whether a rape defendant's perceived guilt depends on the type ...

A: Explanation: Here which means the data analysed using a test is asking  Choose the one  The correct ...

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A: Part(c)  Sample size (n) = 1003 and favorable cases (n) = 522 Then,  We will the find 95% confidence...

Q: The ages of twenty husbands and wives arc given in Tabfe 9.8. Form a two-way frequency table showing...

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Q: You decided to test the other two classes of grade 2 students, to see if you could achieve the same ...

A: The given information is The level of significance α=0.05 The calculated F value in the given ANOVA ...

Q: In the data in the array, which statement is true? 13 15 16 17 18 18 20 21 22 22 22 22 23 23 24 24 ...

A: Given that The data are 13,15,16,17,18,18,20,21,22,22,22,22,23,23,24,24,26,27,28,29,30,30,31,33,34

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A: Chi square estimate the relationship between the two categorical variable. Each categorical variable...

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Q: Use the approval voting method to determine the two executive committee members. The board of direct...

A:   Ballots 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 Candidates                              ...

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Q: 3. The frequenty distribution below shows the daily allowance of 200 students. Allowance (Php) 200-2...

A:   Class Frequency 200 - 239 9 240 - 279 14 280 - 319 19 320 - 359 32 360 - 399 43 400...

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Q: easurements are made at two different times. Find the absolute change and then find the relative cha...

A: Given data,Last year the Mayor of the town of Little Heath had an approval rating of 73%. This year ...

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A: ANOVA is Analysis of variance.

Q: itemA2] (refer to the photo below) Give one possible reason why the population decreased in 1990 aft...

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A: Given information: The intensity function is given for a non-homogeneous Poisson process.

Q: Suppose that r = .35. What is the coefficient of determination, and what does it mean?

A: It is given that Correlation coefficient r = 0.35

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A: We have given that, -26, -15, -7, 0, 1, 6, 9, 15, 22, 22, 26, 28 Then,  We will find third quartile?...

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Q: In a sample of 500 new websites registered on the Internet, 24 were anonymous (i.e., they shielded t...

A: Given that Sample size n =500 Favorable cases x =24 Sample proportion p^=x/n  =24/500 =0.048

Q: Find the smallest sample size giving power of at least .7 when testing equality of six groups at the...

A: Given Information: Power is at least 0.7 There are 6 groups i.e., g=6 The level of significance is 0...

Q: In calculating the variance, we require to find the sum of   a) the deviations of each observation ...

A: We have given that,  In calculating the variance, we require to find the sum of?  We have  to check ...

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A: Given that ; Maximize f = 5x + 9y subject to 8x  +  5y  ≤  200 x  +  4y  ≤  200

Q: Recall the method used to obtain a confidence interval for the difference between two population mea...

A: From the provided information, Sample size (n) = 7

Q: Solve for y and find the mean and variance of X.

A: here use total probability law and basic of expectation(mean) and variance

Q: Ten years after graduation, the salaries of Heriot-Watt University graduates are Normally distribute...

A: Given that.   X~N( μ , ?^2 )   μ=55000    , ?=11000   Z-score =( x - μ )/?

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Q: [itemB2] (refer to the photo below) At what age are most oysters dead?

A: This is a survival graph. We use the term survival plot to represent a group of plots that are const...

Q: For a hypothesis test of a single population proportion, we can use the "Statistics" tab in the Prob...

A: From the given information, the value of x is 5 and the value of n is 16.

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Q: The Statistics Games are played by a large number of students across the county. Last year, 32% of C...

A: GivenLast year, 32% of Clayton State students participated in the Games.and the proportion increased...

Q: The distribution of SAT scores is roughly normal. The mean on the SAT is a 1060 with a standard devi...

A: Mean(µ) = 1060 Standard deviations (σ) = 195 X ~ N (µ, σ )= N ( 1060, 195)

Q: tion 9,6. Out of the total population of certain town in South Africa, 60% belonged to the Black Rac...

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Q: ontinued from previous...... A certain breed of pigs has weights that are normally distributed with...

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Q: which are When using a chi-square test for independence we compute the the frequencies we would obse...

A: Solution 

Q: •10. The credit office of a departmental store gave the following statements for payment due o 40 cu...

A: Given: 337 570 99 759 487 352 115 60 521 95 563 399 625 215 360 178 827 301 50 199 110 501 20...