7 What is the spread of the sampling distribution of X1-X₂?

Q: a value represents the 95th percentile, this means that

A: Here Percentile means there is that much percent value equal or lower than that

Q: Question 4 Suppose that f(x)- e for 0 < x. Determine the (b) P(1 < X < 2.5) (d) P(X < 4) following:…

A: Answer: - Given Probability density function of X                  f(x)  = e-x for  x&gt;00…

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A: The sample size n is 9 and p=0.46.

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A:

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A: The question is about covariance Given : S = { ( -2, 4 ), ( -1, 1 ), ( 0, 0 ), ( 1, 1 ), ( 2, 4 ) }

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A: The box plot contains 5-number summary. That is, the minimum value, the first quartile, the second…

Q: UPVOTE will be given! STATISTICS AND PROBABILITY MULTIPLE CHOICE A public bus company official…

A: Given,sample size(n)=36sample mean(x¯)=8.7population standard deviation(σ)=2.9population…

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A: GivenTo estimate the average amount of sleep( in hours)

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A: Given that: Number of observations, n = 30 Durbin Watson statistic, d = 1.29 Coefficient of…

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A:

Q: 12. The table shows that the total of 10,000 people visited the shopping mall over 12 hours. What…

A: Here use given table of time and respective number of people visited the mall Here from given table…

Q: 19. Mrs. Cruz gives a multiple-choice item in the summative test in Mathematics. The scores of the…

A: Solution: Class Class Boundries Frequencyf cf 21 - 25 20.5 - 25.5 61 61 26 -…

Q: 6.27 Public Option, Part III: Exercise 6.13 presents the results of a poll evaluating support for…

A: a.) The following information has been provided: p^0=0.67        p^1=0.47n1=821         n2=782

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A: Solution Given

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A:

Q: The records of a light bulb manufacturer show that, when the manufacturing machinery is working…

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Q: Vaccinated first born? Yes No Total Vaccinated both parents? Yes No 10 (10.5) 5 (4.5) 15 4 (3.5) 1…

A: The observed and the expected frequencies are given in the table. The researcher is interested to…

Q: In a sample of 10 randomly selected women, it was found that their mean height was 63.4 inches. From…

A: The provided information is n=10x¯=63.4σ=2.5α=0.05The critical value iszc=±1.96  (From statistical…

Q: he table shows the annual compensation of 40 randomly chosen CEOs (millions of dollars).   5.58…

A: Hai  Put the data into excel sheet shart the data from A1 to A41 Then use the excel formulas

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A:

Q: The blood pressures of a group of students the day before their final exam O discrete O continuous

A: WE have to identify variable is discrete or continuous.  variable: the blood pressures of a group of…

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Q: , find the critical value(s) for each situation and draw the appropriate figure showing the critical…

A: From the provided information

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A: Food delivery time is normally distributed with mean 30 and standard deviation is 5 μ=30σ=5

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A:

Q: If X-N(7,4), the P(15.364 ≤ (x-7)²20.095) is

A:

Q: Fill in the P(X=x) values to give a legitimate probability distribution for the discrete random…

A: Given The P(X=x) values to give a legitimate probability distribution for the discrete random…

Q: 2. Study the given information and compute for its test-statistic value. Use ? = 0.05 and interpret…

A: Since you have asked multiple questions, we will solve the first question for you. If you want any…

Q: A new design for the braking system on a certain type of car has been proposed. For the current…

A: (b) Given Information: n=36, σ=13, μ=120 x¯=117.2

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A: Given:- n=25, x¯=8.76,  σ=1.75 To calculate 95% confidence interval of a normally distributed…

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A: Given: The objective is to identify each of the following study as observational or experimental

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A: To find: The mean and standard deviation

Q: Grade on Business Statistics Exam A: 90-100 B: 80 - 89 C: 70 - 79 D: 60-69 F: 60 below Total:…

A: Given table is Grade on business statistics exam Frequency Relative frequency A: 90-100   0.07…

Q: 140,000 120,000 100,000 80,000 60,000 40,000 20,000 0 Sales Quarterly Revenue Chart-2020 Interest…

A: Solution: The chart for the quarterly revenue for the year 2020 is given.

Q: If a procedure meets all of the conditions of a binomial distribution except the number of trials is…

A: The provided information is  The probability distribution function of geometric distribution is…

Q: 6. Which of the following is true about probit analysis?

A: Probit analysis: It is a type of regression used to analyze binomial response variables.

Q: 0 ) 3 3 9 7 3 Weight (Kg) 52 85 68 82 88 60 85 50 64 59 57 66 79 52 76 59 88 50 77 73 49 56 72 87 52…

A: The objective is to determine the Pearson's correlation coefficient for weight and study hours.

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A: HERE FROM GIVEN INFORMATION,  define events and draw venn diagram  S=program has  syntax Error I =…

Q: Q3: Choose the correct answer Let X~F (4,8), then 3. The probability density function of X is O A 5…

A:

Q: Question 2 Use the table of measurements of length and force that you have been supplied with to…

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Q: Define p(x,y) by p(0,1)=1/6, p(1,0)=p(1,1)=1/3 , p(2,2)=1/6 and p(x,y)=0 for any other (x,y). a)…

A:

Q: 35. For each of the following, the sample mean, sample stand- confidence interval is given. Find the…

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

Q: Let X denote the mean of a random sample of size n from the distribution N(μ, 10) and P(x − < µ < x…

A:

Q: cation in lower ed to receive

A: Here we have population standard deviation is known and the sample size is greater than 30 hence we…