Mathematics, 21.05.2020 18:57 rcmhargoux9546
Lightbulbs of a certain type are advertised as having an average lifetime of 750 hours. The price of these bulbs is very favorable, so a potential customer has decided to go ahead with a purchase arrangement unless it can be conclusively demonstrated that the true average lifetime is smaller than what is advertised. A random sample of 45 bulbs was selected, the lifetime of each bulb determined, and the appropriate hypotheses were tested using MINITAB, resulting in the accompanying output. x = 738.44, s = 38.20.What conclusion would be appropriate at a significance level of 5%?
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Mathematics, 21.06.2019 18:30
What is the prime factorization of 23 ?me with this question
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Mathematics, 21.06.2019 19:30
Order the measurements from the least to the greatest. 2,720 ml , 24.91 l , 0.0268 kl
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