Determine σx from the given parameters of the population and the sample size.
μ = 65, σ = 18, n = 36
Group of answer choices
= 18
= 18
= 36
= 3
A simple random sample of size n = 49 is obtained from a population with = 80, σ = 14. Find the probability that the sample mean is greater than 83.
Group of answer choices
80
0.0668
0.0179
0.9332
A simple random sample of size n = 49 is obtained from a population with μ = 80, σ = 14. Find the probability that the sample mean is less than or equal to 75.8
Group of answer choices
0.0823
0.7969
0.0668
0.0179
A simple random sample of size n = 49 is obtained from a population with μ = 80, σ = 14. Find the probability that the sample mean is between 78.3 and 85.1.
Group of answer choices
0.2031
0.0179
0.0668
0.7969