A simple random sample of size n = 10 is obtained from a population that is normally distributed with µ = 30 and σ = 8. What is the sampling distribution of x̄?
Answer to relevant QuestionsA simple random sample of size n = 40 is obtained from a population with µ = 50 and σ = 4. Does the population need to be normally distributed for the sampling distribution of x to be approximately normally distributed? ...Answer the following questions for the sampling distribution of the sample mean shown. (a) What is the value of µx̄? (b) What is the value of σx̄? (c) If the sample size is n = 16, what is likely true about the shape of ...The upper leg length of 20- to 29-year-old males is normally distributed with a mean length of 43.7 cm and a standard deviation of 4.2 cm. (a) What is the probability that a randomly selected 20- to 29-year-old male has an ...Suppose that cars arrive at Burger King’s drive-through at the rate of 20 cars every hour between 12:00 noon and 1:00 P.M. A random sample of 40 one-hour time periods between 12:00 noon and 1:00 P.M. is selected and has ...n = 500, p = 0.4
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