Calculate the standard deviation from the data given below : Size of item Frequency Size of item Frequency 3.5 3 7.5 85 4.5 7 8.5 32 5.5 22 9.5 6.5 60

Q: Example 5-1. A random variable X has the following probability function: Values of X, x : 1 3 4 7 p(...

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Q: An article suggests the uniform distribution on the interval (6.5, 21) as a model for depth (cm) of ...

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Q: A. Choose one problem, formulate the null and alternative hypothesis. Then identify situations where...

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Q: Calculate the coefficient of correlation between x and y. 4 y 9 13 17

A:   X Y X.Y   X2 Y2 2 5 10 4 25 4 9 36 16 81 6 13 78 36 169 8 17 136 64 289 ∑X=20 ∑Y=44...

Q: Suppose the average age of family members is 34 with a standard deviation of 4. One hundred members ...

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Q: The annual salaries of a group of employees are given in the following tables: Salaries (in $ '000) ...

A: x Frequency (f) f⋅x f⋅x2 45 3 135 6075 50 5 250 12500 55 8 440 24200 60 7 420 25200 65 9 5...

Q: 1. Compute for the mean and the standard deviation.  2. What is the proportion above 87.5?  3. What...

A: here as per policy i have calculated 3 subparts   here ascending order of given data is  66, 69, 71,...

Q: 3921 2141 8394861 45838 1644 889 1461516 7903 4467 2451 10948617 60074 3407 1212 4129284 14689

A: Given: ∑y=34604∑x=16252∑xy=61768493∑x2=29698414n=10

Q: A random sample of 36 scores from the Statistics examination of TVL learners is taken and gives a sa...

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Q: The competitive advantage of small American factories such as Tolerance Contract Manufacturing lies ...

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Q: A CEO of a multihospital system is planning to expand operations into various states. It will take s...

A: Since you have posted a question with multiple subparts, we will solve first three subparts for you....

Q: A committee of size 5 is to be selected at random from 3 women and 5 men. Find the probability distr...

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Q: Prove the reproductive property of independent Poisson RVs. Hence find the probability of 5 or more ...

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Q: Among the following hypotheses, contains a single constraint, and_ contains two constraints: (i) B1 ...

A: Constraints Constraints are restrictions(limitations or boundaries) that need to be placed on varia...

Q: Example 5-2. If, p(x) = { 15ix = 1, 2, 3, 4, 5 (0, elsewhere Find (i) P {X = 1 or 2), and (ii) P{1}.

A: given; probability density function of X;p(x)=x15x=1,2,3,4,5 0elesewhere

Q: With the following data in 6 cities calculate the coefficient of correlation by Pearson's method bet...

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Q: In all research analysis it is not possible to study whole population, we always estimate population...

A: Generally, mean is the best central tendency measure for a dataset. Median is used when the distribu...

Q: A committee of size 5 is to be selected at random from 3 women and 5 men. Find the probability distr...

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Q: How many two digit numbers can be formed from the digits 1, 3, 7 and 9 when the digits are: (a) not ...

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Q: The variable x takes only two values x, and x, with frequencies fj and f. If s be the S.D. of x, sho...

A: Solution is given:

Q: Please to perform in excel and show formulas. Note: Please to perform in excel and show f

A: a. From the given information, Subgroup x¯ R 1 8.3 2 2 8.1 3 3 7.9 1 4 6.3 5 5 8.5 3 ...

Q: Suppose that X has a lognormal distribution with parameters 0 = 5 and w2 = 9. Determine the followin...

A: We have given that,  Let X be the random variable from Log normal distribution with parameters θ = 5...

Q: Suppose that in constructing a single-family house, the time X (in days) necessary for laying the fo...

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Q: With regard to Lasperye's and Paasche's price index number, it is maintained that "if the prices of ...

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Q: Define bivariate analysis

A: Given : Term : Bivariate Analysis

Q: 9 2 4 3 1 4 8 3

A: Given: outcome Frequency 1 9 2 4 3 1 4 8 5 3 6 0

Q: A committee of size 5 is to be selected at random from 3 women and 5 men. Find the probability distr...

A: We have given that a committee of size 5 is to be selected at random from 3 women and 5 men.

Q: Suppose that x has a beta distribution with parameters a = 2.9 and B = 1. Determine to 4 decimal pla...

A: Given : α = 2.9β = 1

Q: Given : Number of pairs of observation X and Y series = 8 X series Àrithmetic Average = 74.5 X serie...

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Q: Find Mean Deviation : (i) about Mean (ii) about Median, in the following data: 2, 7, 9

A: Given data is2, 7, 9

Q: Еxample 6 Find Quartile Deviation for the following distribution: Classes 2.4 4-6 6 -8 8- 10 10- 12 ...

A: Class Frequency 2 - 4 10 4 - 6 25 6 - 8 18 8 - 10 12 10 - 12 5

Q: The rates of increase in the population of a country during the last 3 decades are 10%, 20% and 30%....

A: Given The data is as follows: Rate of increase in the pop. during last 3 decades are as follows: 10...

Q: Let X be a continuous random variable with the following density function: 1 f(x) = 5x,0sxs2 0, othe...

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Q: If (X, Y) is uniformly distributed over the semicircle bounded by y = /1-x? and y = 0, find E(X/Y) a...

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Q: Suppose the measurement of 800 items are normally distributed with mean 66 cm and standard deviation...

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Q: A group consists of 150 children. The group is divided into three subgroups A,B and C in the ratio o...

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Q: If n-25, -46, and s-5, construct a confidence interval at a 95% confidence level. Assume the data ca...

A: Givenn=25x=46s=5confidence level = 95%

Q: A researcher finds that forecasting errors for a particular econometric model follows a uniform dist...

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Q: commands when you can) Thank you Find the minimum sample size n needed to estimate mean for the giv...

A: We have given that  Standard deviation =8.3 Margin of error =E=2 90% confidence interval. 

Q: If the size of a sample is 64 and standard error of mean is 1.5.What should be the sample if standar...

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Q: (4) A college hires students to work as lab assistance. The number of hours per week students work f...

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Q: ou are the operations manager for an airline and you are considering a higher fare level for passeng...

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Q: Prehistoric pottery vessels are usually found as sherds (broken pieces) and are carefully reconstruc...

A: Note: As per guidelines only first 3 subparts have been answered if you need answers for the rest of...

Q: The mean height of 45 students of a class is 60" and the mean height of 55 students of another class...

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Q: Find the first quartile (Q1) and the third quartile (Q3), given the scores of 9 players in an online...

A: Arrange the given data in ascending order1, 3, 7, 7,  16, 21, 27, 30, 31sample size(n)=9

Q: Define confidence interval

A: Given : Term : Confidence interval  

Q: 2 3 Test 1 4 5 8 9 10 Student A 12 13 2 5 9 6 10 7 Student B 8. 10 9 12 1 4 7 9.

A: Given: Student A  Student B  12 8 2 10 13 9 2 12 5 5 0 1 9 4 6 7 10 9 7 3

Q: Out of forty student, 14 are taking English composition and 29 are taking Chemistry. If five student...

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Q: 5-2-1. Properties of Distribution Function. We now proceed to derive a number of properties common t...

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