# Question

A random sample of size n = 12 from a normal population has the mean x = 27.8 and the variance σ2 = 3.24. If we base our decision on the statistic of Theorem 8.13, can we say that the given information supports the claim that the mean of the population is µ = 28.5?

## Answer to relevant Questions

If S1 and S2 are the standard deviations of independent random samples of sizes n1 = 61 and n2 = 31 from normal populations with s21 = 12 and s22 = 18, find P(S21 / S22 > 1.16). Find the probability that in a random sample of size n = 4 from the continuous uniform population of Exercise 8.46, the smallest value will be at least 0.20. A process error may cause the oxide thicknesses on the surface of a silicon wafer to be “wavy,” with a constant difference between the wave heights. What precautions are necessary in taking a random sample of oxide ...With reference to the definition of Exercise 9.16, find the decisions that will minimize the maximum opportunity loss of (a) Ms. Cooper of Exercise 9.12; (b) The truck driver of Exercise 9.13. A country has two airfields with installations worth $ 2,000,000 and $ 10,000,000, respectively, of which it can defend only one against an attack by its enemy. The enemy, on the other hand, can attack only one of these ...Post your question

0