Mathematics, 05.12.2019 17:31, hahaiwannadie
Arandom sample of 60 suspension helmets used by motorcycle riders and automobile race-car drivers was subjected to an impact test, and on 16 of these helmets some damage was observed. (a) find a 95% two-sided confidence interval on the true proportion of helmets of this type that would show damage from this test. round your answers to 3 decimal places. ≤p≤ (b) using the point estimate of p obtained from the preliminary sample of 60 helmets, how many helmets must be tested to be 95% confident that the error in estimating the true value of p is less than 0.02? n= (c) how large must the sample be if we wish to be at least 95% confident that the error in estimating p is less than 0.02, regardless of the true value of p?
Answers: 1
Mathematics, 21.06.2019 18:00, evanwall91
Need on this geometry question. explain how you did it.
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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
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Mathematics, 22.06.2019 00:30, genesis0523
What line represents the relationship between r and s
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