A simple random sample of size n=64 is obtained from a
population with mu equals 76 and sigma equals 8. (a) Describe the
sampling distribution of x overbar. (b) What is Upper P left
parenthesis x overbar greater than 77.9 right parenthesis? (c)
What is Upper P left parenthesis x overbar less than or equals
73.55 right parenthesis? (d) What is Upper P left parenthesis
74.85 less than x overbar less than 78.1 right parenthesis?
Suppose a simple random sample of size n=64 is obtained from a
population with μ=76 and σ=8.
(a) Describe the sampling distribution of x̅
(b) What is P (x̅ > 77.7)?
(c) What is P (x̅ ≤ 73.65)?
(d) What is P (74.5 < x̅ < 78.15)?
A simple random sample of size n=49 is obtained from a
population with µ=83 and σ=21.
Describe the sampling distribution of x̄, is this distribution
approximately normal. (enter Yes or No)
What is P(x̄>88.1)=
A simple random sample of size n=64 is obtained from a
population with μ=88 and σ=24.
(a) Describe the sampling distribution of x. is it 1,2,3,4, or
5?
1. The distribution is skewed right.
2. The distribution is approximately normal.
3. The distribution is uniform.
4. The distribution is skewed left.
5. The shape of the distribution is
unknown.
Find the mean and standard deviation of the sampling
distribution of x.
Ux=
Ox=
(b) What is P (x>91.75) ? Round...
26-Suppose a simple random sample of size n=36 is obtained from
a population with μ=64 and σ=15.
1- P(x->65.5) =
2- P(x->c) = 0.72. Find c.=
3- P(64.3<x-<65.65) =
4-P(|z|<c) = 0.45, Find c.=
5-P(|z|>c) = 0.35. Find c.=
A simple random sample of size n=64 is obtained from a
population with μ=77 σ=24.
(a) Describe the sampling distribution of x
(b) What is P (x > 80.75)?
(c) What is P (x ≤ 70.25)?
(d) What is P (74.6<x<83.3)?
A simple random sample of size n = 15 is obtained from a
population with μ = 97 and σ = 23. Enter your answer as an area
under the curve with 4 decimal places. P(x⎯⎯⎯ ≤ 94)
Suppose a simple random sample of size n=75 is obtained from a
population whose size is N= 30,000 and whose population proportion
with a specified characteristic is p= 0.4 .
A) Determine the standard deviation of the sampling distribution
of p hat (Round to 6 decimals)
B) What is the probability of obtaining x=33 or more individuals
with the characteristic? That is, what is P(p ≥0.44)? (Round to
4 decimals)
Suppose a simple random sample of size n=1000 is obtained from a
population whose size is N=2,000,000 and whose population
proportion with a specified characteristic is p = 0.22
a. What is the probability of obtaining x=250 or more
individuals with the characteristic?
Suppose a simple random sample of size n=75 is obtained from a
population whose size is N=15,000 and whose population proportion
with a specified characteristic is p=0.8.
a) Determine the mean of the sampling distribution of p with
caret.
Determine the standard deviation of the sampling distribution of
p with caret.
b) What is the probability of obtaining x=66 or more individuals
with the characteristic? That is, what is P(p with caret greater
than or equals 0.88)?
What is the...