QUESTION 2 a) Measurements of the length of a random sample of 200 rods made by a certain machine during one week showed a mean of 0.824m and a standard deviation of 0.042m. Find a 95% confidence interval for the mean length of all the rods. b) Suppose that the diameters of 100 balls in a sports hall represent a random sample of the diameters of all 1546 in the sports hall. Using the table given, determine unbiased and efficient estimates of: i. the true mean. ii. the true variance. Diameters of 100 Balls in the Sports Hall Diameter Number of (inches) Balls 60-62 5 63-65 18

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Q: Find the answer 17 +23 a.

A: Find the sum 1723+2314 as follows.

Q: 10. In the center of town there is a square park with an area of 900 square feet. If Stephen walks…

A: Let be the length of the each side of the square park Area =a2 Sq. ft. a2 = 900 a = 30

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A: Given: A=15, 3, 2, 5B=3, 5, 2, 10C=2, 5, 2, 15

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Q: 1. Find two numbers whose sum is 17, given that is one more than 3 times the other. Ans. 4,13 2.…

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A: The given expressions are the combination expressions. Formula to find the values of the…

Q: B. Make Me Simple! Final Answer Given 1. (x16y208) 3 3 22 57 2. TI 24 54

A: Topic = Algebra

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Q: 2. Multiple application a. Read the conversation between Dylan, Dylan's father and Dylan's…

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Q: mplify the expression 1 2 16 C. 2 2 1. В. D. 2 4 41 64 21 192 O D

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Q: 7c. ? ⋅ 4 = 32

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