Mathematics, 16.04.2021 15:50 calebbailey2318
2. A manufacturer of electronic kits has found that the mean time required for novices to assemble its new circuit tester is 3.15 hours, with a sample standard deviation of 0.23 hours. A consultant has developed a new instructional booklet intended to reduce the time an inexperienced kit builder will need to assemble the device. In a test of the effectiveness of the new booklet, 25 novices require a mean of 2.98 hours to complete the job. Assuming the population of times is normally distributed, and using the 0.01 level of significance, should we conclude that the new booklet is effective? Determine and interpret the p-value for the test.
Answers: 2
Mathematics, 21.06.2019 20:30
Suppose you just purchased a digital music player and have put 8 tracks on it. after listening to them you decide that you like 4 of the songs. with the random feature on your player, each of the 8 songs is played once in random order. find the probability that among the first two songs played (a) you like both of them. would this be unusual? (b) you like neither of them. (c) you like exactly one of them. (d) redo () if a song can be replayed before all 8 songs are played.
Answers: 2
Mathematics, 21.06.2019 22:30
60 musicians applied for a job at a music school. 14 of the musicians play both guitar and drums. what is the probability that the applicant who gets the job plays drums or guitar?
Answers: 1
2. A manufacturer of electronic kits has found that the mean time required for novices to assemble i...
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