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Week 4 stats 3 - c No we cannot be 99 confident that the...

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8.6 Mean = 50.757, std dev = 1.65, n = 40 U = 1.65/sqrt 40 = .260888 a. 95% conf = 50.757 +/- 2*.260888 = interval 50.239246 to 51.274754 99% conf = 50.757+/- 3*.260888 = interval 49.974336 to 51.539664 b. Yes, we can be 95% confident that the bags will hold at least 50 pounds without breaking because the interval does not go below 50.
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Unformatted text preview: c. No, we cannot be 99% confident that the bag will hold at least 50 pounds because the interval drops below 50. d. I agree with Talib, at 1 in every 100 bags is likely to break, so we cannot be sure that this is the strongest bag on the market....
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