Mathematics, 08.10.2019 01:10, shainaanderson24
Asample of 900 computer chips revealed that 58% of the chips fail in the first 1000 hours of their use. the company's promotional literature claimed that 62% fail in the first 1000 hours of their use. is there sufficient evidence at the 0.01 level to dispute the company's claim? state the null and alternative hypotheses for the above scenario.
Answers: 3
Mathematics, 21.06.2019 22:00, lalanduni
Fatima plans to spend at least $15 and at most $20 dollars on sketch pads and pencils. if she buys 2 sketchpads, how many pemcils can she buy while staying in her price range? fatima can buy between and pencils. ? (type whole numbers. use ascending? order.)
Answers: 1
Mathematics, 21.06.2019 22:50, Yangster9305
Ur environment is very sensitive to the amount of ozone in the upper atmosphere. the level of ozone normally found is 4.04.0 parts/million (ppm). a researcher believes that the current ozone level is not at a normal level. the mean of 2525 samples is 4.44.4 ppm with a standard deviation of 0.80.8. assume the population is normally distributed. a level of significance of 0.020.02 will be used. make the decision to reject or fail to reject the null hypothesis. answer tables
Answers: 3
Asample of 900 computer chips revealed that 58% of the chips fail in the first 1000 hours of their u...
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