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Letr denote the مقع O time it takes to find parking spot. Suppose we take random sample of n = 666 cars entering the parking
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Answer #1

ŭ = 8 c = 0.90 n = 66 x = 1-c s = 4 2 - 1 -0.90 = 0.10 The two tailed value of z at 90. confidence interval is calculated usi

The 90.1. u is confidence interval calculated as a 50 € za CI= t 드쓸 WILE ZO:10 s ł + 20.10 S 2 n 2 8 8 +1.64584 = 1.645 X 4 1

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