Q3: A business measurement is a random variable defined by a normal distribution. The variance of this population is 2 untis². What is the chance that the sample variance for 21 randomly selected observations from this population is larger than 3 untis²

Q: A sample of n = 4 scores has SS = 60. Which is the variance for this sample? Group of answer choices…

A: Given N=4 SS=60

Q: Suppose you throw two dice and take the sum as a discrete random variable. Let us assume you take a…

A: When you throw two dices together, each dice will show a number ranging from 1 to 6 on the side…

Q: Suppose the variance of X is 33. What is the variance of .23X?

A: Given,Var(X)=33 we know that Var(ax)=a2Var(X)

Q: A. B. O n = 28, X = 118, s = 10.0 n=25, X = 112, S = 12.0 Find the variance of A and B

A: n=28 , x¯=118   ,   s=10.0

Q: The probability that it snows in a particular city on any given winter day is 13%. What is the…

A: The probability that it snows in a particular city on any given winter day is 13%.  The number of…

Q: A racing car consumes a mean of 103103 gallons of gas per race with a variance of 3636. If 3838…

A: The Z-score of a random variable X is defined as follows: Z = (X – µ)/σ. Here, µ and σ are the mean…

Q: A manager believes that the variance of output on the second shift is greater than the variance on…

A: State the hypotheses.

Q: In a population of normally distributed data, the mean is 68 and the standard deviation is 12.75.…

A: given data normal distributionμ = 68σ = 12.75sample size (n) = 25P(70<x¯<75) = ?