Suppose a simple random sample of size nequals=6464 is obtained from a population with mu equals 84μ=84 and sigma equals 16σ=16. (a) describe the sampling distribution of x overbarx. (b) what is upper p (x overbar greater than 87.6 )p x> 87.6? (c) what is upper p (x overbar less than or equals 79.2 )p x≤79.2? (d) what is upper p (81.3 less than x overbar less than 87.6 )p 81.3

a. is distributed

b.

c.

d.

Step-by-step explanation:

a.

The central limit theorem states that, for large n, the sampling distribution of the sample mean is approximately normal with mean and variance , then, the sample mean is distributed as a normal random variable with means and variance .

b.

c.

d.

answer: if you weigh 60 pounds on earth, on the moon you will weigh about 10 pounds. if you weigh 120 pounds on earth, you will weigh about 20 pounds on the moon. since weight is caused by the mass of two objects that are near each other, the bigger the objects, the more the force of gravity.

step-by-step explanation: if you weigh 60 pounds on earth, on the moon you will weigh about 10 pounds. if you weigh 120 pounds on earth, you will weigh about 20 pounds on the moon. since weight is caused by the mass of two objects that are near each other, the bigger the objects, the more the force of gravity.

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