Problem 7 For each of the following random variables, find P(X5), P(2

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Q: The standard deviation for a population is σ = 15.5. A sample of 23 observations selected from this…

A: FOR ANY QUERIES, PING ME     HAPPY LEARNING

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Q: For a data set obtained from a sample of size n = 144 with  x̄  = 50.25, it is known that σ = 4.2(a)…

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A: a & b. c.

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Q: Confidence interval for the difference between population proportions. (Assume that the samples are…

A: We have,n1=1000n2=1200x1=250x2=195p̂1= x1/n1 =250/1000=0.250p̂2= x2/ n2 =195/1200=0.1625confidence…

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A: Step 1:part a For 99% confidence interval z = 2.58 n=e2z2∗0.52​ n=0.02522.582∗0.52​n=2662.56n= 2663…