i) Mean x = kg ii) Ex² = iii) Standard deviation s = kg (to 3 significant figures)

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Q: (a) What is the probability that a randomly selected student achieves a final score of 90 or above?…

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A: Given that ; Sample size(n) = 72  Sample mean = 100 μ = 75 ? = 41  By using the one sample mean z…

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Q: Example 17.9 From heights (X,) in inches, weights (X,) in kg and ages (X3) in years of a group of…

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Q: Suppose that the Cumulative distribution function (CDF) of the random variable X with parameter 0 >…

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A: The tail of the test is determined by checking symbol in alternative hypothesis.

Q: Example 22.7 The following figures give the number of defects in 10 samples, each containing 200…

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Q: Standard Normal Distribution 0.4 Step 1: Select one-tailed or two-tailed. O One-tailed O Two-tailed…

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Q: 3. The monthly number of cars sold by a car dealer from January to October for a particular year…

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Q: 1) [2, A bag contains 10 balls numbered from 1 to 10. If a ball is randomly selected from the bag…

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Q: Construct the indicated confidence interval for the population mean μ using the t-distribution.…

A: GivenMean(x)=13.2standard deviation(s)=2.0sample size(n)=7c=0.99

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A: Given that  Sample size n =85 Sample mean =20.5 Population standard deviation =8.3

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A: Given,sample size(n)=32sample mean(x¯)=66.3sample standard deviation(s)=1.9degrees of…

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Q: Please calculate the SD of a sample of 8 data points using the formula taught in class. The…

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Q: 3. You want to know at 97% confidence interval, the proportion of estudents with failed subject. A…

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Q: The following data represent the number of siblings (brothers and sisters) in the families of 20…

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Q: 9 of the students are girls. What 3. There are 50 students in a class, both boys and girls. percent…

A: It is given that Number of girls = 9 Total number of students = 50 Number of boys = 50 - 9 = 41

Q: Using the computed MGFS, derive the E[X] and V[X] 2. Binomial M2(t) = E*=o etk (") p*(1 – p)"=R =…

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Q: 5) Given 27, 43, 61, 63, 64, 71, 76, 80, 82, 89, 92, a) Find Q and Q3 b) Find IQR c) s] Find the…

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Q: a) m(t) = = 2-et b) m(t) = e2(et-1) c) Using results in (a) and (b), Find the E(Y) and V (Y)?

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Q: If you are dealt 4 cards from a shuffled deck of 52 cards find the probability that all 4 cards are…

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