From the following data calculate Harmonic mean Class Interval Frequency 0-10 20 10-20 25 20-30 85 30-40 72 40-50 90 50-60 130 60-70 60 )

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A: Solution:  

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Q: 5 The z-score that bounds a tail area of 0.1112 is ________. a 1.29         b 1.26         c 1.22   ...

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Q: Q. 1. Calculate median from the following item: 5, 7,9, 11, 13, 15, 17, 19, 21

A: here n = 9 data  we have to find median

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Q: Under the normal curve, the areas at the tails are minimal. True or False

A: The provided statement is "True".

Q: Suppose f1,., En are i.i.d N(0, 1) random variables. If m < n, find the joint distribution o

A: From the given information, ξ1,ξ2,....,ξn are i.i.d N0,1 random variables. Consider, Eη1=E∑k=1nξk   ...

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Q: A four-digit security code is randomly selected from the numbers 0,0, 1,1, 2,2, 3,3, 4,4, 5,5, 6,6, ...

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Q: Rankings of 10 trainees at the beginning (x) and at the end (y) of a certain course are given below:...

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Q: Suppose that the speed at which cars go on the freeway is normally distributed with mean 73 mph and ...

A: Ans#-  Given that the speed at which cars go on the freeway is normally distributed             with...

Q: Let L be a r.v: P(L <= 0) = 90%, P(L = 10) = 5%, P(L = 20) = 5%. Find VaR95%(L) and VaR95.1%(L). Exp...

A: Given the probabilities of the random variable L as PL≤0=90% PL=10=5% PL=20=5%

Q: 23. For the standard normal curve , find the -score(s) a. that has area 0.30 to its left b. that has...

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Q: Find the margin of error for the given values of c, s, and n. c= 0.99, s = 3.5, n = 21 Click the ico...

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Q: A coin is tossed six times. What is the probability of obtaining four or more heads ?

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Q: What is the formula for a two tailed test?

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Q: Q. 16. Calculate co-efficient of rank correlation from the following data. x= 15 12 14 13 7 5. 8 9. ...

A: X Rank(X) Y Rank(Y) 15 8 18 8 12 5 6 1 14 7 8 3 13 6 9 4 9 4 12 7 8 3 7 2 7 2 11 6 5...

Q: The area of the region between z = 0 and z= 1 is 0.3643. True or False

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Q: Calculate Harmonic from the following statistical data : Wages: 10 12 14 16 18 No. of workers: 2 5 8...

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Q: S 2 (x + y) 0 < x < 1, 0 <y < 1, y < x f(x, y)= elsewhere P (x < , y < )- 1

A: Given: f(x,y)=2(x+y)   0&lt;x&lt;1,  0&lt;y&lt;1, y&lt;x0                  elsewhere

Q: Examine by contıngency table metnoa, whetner the nature or area is reiated o voung preference. The a...

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Q: The z-score measures how many standard deviation a given value is above or below the mean. True or ...

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Q: Translate in mathematical sentence: The sum of 8 and - 4 is greater than a number n. a. n-4 b. 4-n...

A: Here we have to translate mathematical sentence The sum of 8 and -4 is greater than a number n  

Q: Areas under the normal curve are positive values. True or False

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Q: given a normal distribution with mean of 40 and standard deviation of 6, find

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Q: Q. 19. Calculate co-efficient of concurrent diviation form the following data. x=1 2 3 4 5 6 7 8. y=...

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Q: Construct a probability distribution Answer here:

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Q: C. The student has competed in Rhythm and Standard, but not smooth?

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Q: length of pregnancies are normally distributed with a mean of 266 days and a standard deviation of 1...

A:  A baby will be considered premature if he borns at least 3 weeks ago. Means 21 days ago  

Q: Q. 19. Calculate co-efficient of concurrent diviation form the following data. x=1 2 3 4 5 7 8. y= 1...

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Q: In a sample of i000, the mean is found to be 17.5 and the standard deviation 2.5. In another sample ...

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Q: please round answers to what the question says(: You may need to use the appropriate technology to a...

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Q: What is the scaling coefficient for the relationship between Drag Force (Fdrag) and Cross-Sectional ...

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Q: Find the (a) mean, (b) median, (c) mode, and (d) midrange for the data and then (e) answer the given...

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

Q: Determine whether the intercept coefficient (1664.46) is statistically significant at the 5 percent ...

A: Determine whether the intercept coefficient (1664.46) is statistically significant at the 5 percent ...

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A: c. Pie chart

Q: Intercept E 62.13 26.79 1.60E-30 1539.66 1789.51     Price of Roses −6.68 F −1.41 1.64E...

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Q: Galton discovered the phenomenon of regression to the mean when observing the correlation of the hei...

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Q: Jamaal recorded the amount of money he spent on snacks and then calculated the following measures: ...

A: Given: Jamaal recorded the amount of money he spent on snacks  The measures are as follows: mean: $5...

Q: Suppose an experiment of a dodecagon (12-sided die) is rolled at random. • If we let X to be the dod...

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Q: In a random sample of 24 people, the mean commute time to work was 34.4 minutes and the standard dev...

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Q: 15.37

A: 15.37) a) The population standard deviation is 5 mg and the margin of error E is 1.