Mathematics, 26.11.2019 20:31 gibbss80stu
Hard times in june 2010, a random poll of 800 working men found that 9% had taken on a second job to pay the bills. () a) estimate the true percentage of men that are taking on second jobs by constructing a 95% confidence interval. b) a pundit on a tv news show claimed that only 6% of work-ing men had a second job. use your confidence interval to test whether his claim is plausible given the poll data.
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Mathematics, 22.06.2019 00:00
If each bricks costs and he can only buy one brick how much will it cost him to get the material to put around the outside of his garden?
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The random variable x has probability density function f (x) = k(−x²+5x−4) 1 ≤ x ≤ 4 or =0 1 show that k = 2/9 find 2 e(x), 3 the mode of x, 4 the cumulative distribution function f(x) for all x. 5 evaluate p(x ≤ 2.5). 6 deduce the value of the median and comment on the shape of the distribution.
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Hard times in june 2010, a random poll of 800 working men found that 9% had taken on a second job to...
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