Calculate Arithmetic mean by direct and shortcut method. CI 50-54 55-59 60-64 65- 69 70- 74 75 - 79 80 - 84 85-89 Total 6. 11 16 21 11 5 78

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Q: For a population with u = 80 and o = 12, what is the z score corresponding to X = 92? O +0.50 O +1.2...

A: Given :   Mean (μ) = 80 Standard deviation (σ) = 12 X = 92  

Q: Education Less than high school 3599 High school graduate/GED 8000 Some college/tech school 10,408 |...

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Q: Compute Arithmetic Mean from the following frequency distribution C.I 2. 6 7-11 12-16 17-21 22 - 26 ...

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Q: Testing: H0:μ=42.795H0:μ=42.795 H1:μ≠42.795H1:μ≠42.795 Your sample consists of 45 subjects, with a...

A: Given Mean=42.795 n=45 X-bar=42.9 S=3.81

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Q: A hypothesis test uses a significance level of 5%. The Power of the Test is 0.90. Which of these sta...

A: Given : A hypothesis test uses Significance level  = 5% = 0.05 Power of the test = 90% = 0.90  

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Q: exact

A: Here use binomial distribution  Finite number of toss Each trial is independent from each other  Th...

Q: In 2012, it was reported that 22% of all car accidents in Connecticut were alcohol related. Suppose ...

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Q: In a distribution with u= 80 and o = 20, a z-score of z = -1.00 corresponds to an X value of X = 70....

A: Formula of z score : z = x-μσ

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Q: what is the sample variance? give the correct answer. a. 72.10 b. 73.23 c. 74.45 d. 75.1...

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Q: Year    Gross Federal Debt ($millions) 1945    260,123 1950    256,853 1955    274,366 1960    2...

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Q: what is the range? give the correct answer. a. 49 b. 48 c. 79 d. 31

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Q: According to the below table calculate the weighted mean. Row Number of Students Row Average 82.3 91...

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Q: Theorem 4 If B CA, P(B)< P(A).

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Q: From a class containing 5 boys and 6 girls a group of 5 students is to be selected. There are how ma...

A: We have given that Number of boys = 5 Number of Girls = 6 We have to select 5  students 

Q: Example Calculate standard deviation of the following data : X : 10 11 12 13 14 15 16 17 18 f 2 7 10...

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Q: x P(x) 0.025 1 0.143 2 0.338 3 0.357 4 0.137 Households are randomly selected and partitioned into g...

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Q: Find the probability of the Binomials given. 9. In a history class, Colin and Diana both write a mul...

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Q: Exercise 4: Weighted Mean A first year freshman received the following grades. What is her Grade Poi...

A: Weighted average is the type of average which provided the weighted mean with respect to weight. It ...