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105e x has a distribution with μ=24 and σ=20. (a) If a random sample of size n=46 is drawn, find μxˉ,σxˉ−and P(24≤xˉ≤2
Posted: Thu Jul 14, 2022 4:53 pm
by answerhappygod
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105e x has a distribution with μ=24 and σ=20. (a) If a random sample of size n=46 is drawn, find μxˉ,σxˉ−and P(24≤xˉ≤26 ). (Round σxˉ−to two decimal places and the probability to four decimal places.) μxˉ=σxˉ=P(24≤xˉ≤26)= (b) If a random sample of size n=73 is drawn, find μxˉ,σxˉ and P(24≤xˉ≤26). (Round σxˉ to two decimal places and the probability to four decimal places.) Hx=σxˉ=P(24≤xˉ≤26)= (c) Why should you expect the probability of part (b) to be higher than that of part (a)? (Hint: Consider the standard deviations in parts (a) and (b).) The standard deviation of part (b) is part (a) because of the sample size. Therefore, the distribution about μx is