Mathematics, 08.04.2021 20:20 keke515
1. P336. 7. The capacities ( in ampere-hours) were measured for a sample of 120 batteries. The average was 178 and the standard deviation was 14. (a) Find a 95% con dence interval for the mean capacity of batteries produced by this method. (b) Find a 99% con dence interval for the mean capacity of batteries produced by this method. (c) An engineer claims that the mean capacity is between 176 and 180 ampere-hours. With what level of con dence can this statement be made? (d) Approximately how many batteries must be sampled so that a 95% con dence interval will specify the mean to within 2 ampere-hours? (e) Approximately how many batteries must be sampled so that a 99% con dence interval will specify the mean to within 2 ampere-hours?
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Mathematics, 21.06.2019 15:00
With this question! what is process of elimination? ? p.s. my brothers acc got banned so add his new one @ yamauchiyamyam17
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Mathematics, 21.06.2019 23:20
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Atruck can be rented from company a $50 a day plus $0.60 per mile. company b charges $20 a day plus $0.80 per mile to rent the same truck. find the number of miles in a day at which the rental costs for company a and company b are the same
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1. P336. 7. The capacities ( in ampere-hours) were measured for a sample of 120 batteries. The avera...
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