Given Information:
Population size = N = 210
Mean height of women population = μ = 64.4 in.
Standard deviation of height of women population = σ = 2.9 in.
Sample size = n = 36
Required Information:
Sample mean = μx = ?
Sample standard deviation = σx = ?
Answer:
Sample mean = μx = 64.4 in.
Sample standard deviation = σx = 0.44 in.
Step-by-step explanation:
We are given a Normal Distribution, which is a continuous probability distribution and is symmetrical around the mean. The shape of this distribution is like a bell curve and most of the data is clustered around the mean. The area under this bell shaped curve represents the probability.
The mean of the sample will be same as population mean that is
μ = μx = 64.4 in
Whereas the sample standard deviation is given by
Where σ is the standard deviation of height of women population, N is the population size and n is the sample size.
The term is known as finite population correction factor and is used since the sampling is done without replacement.
Therefore, the standard deviation of sample is 0.44 in.
Answer:
Income on man from sunday to thursday
=75+75+75+75+75= 375
Income on friday- 93
= 375+93= 468
468÷6= 78.
Step-by-step explanation:
here ! I used the formula area = length × width
and just some algrbric expressions solving
Answer:
Step-by-step explanation:
f(x) = -4x^2 - 6x - 1 ........ g(x) = -x^2 - 5x + 3
find (f + g)(x)
-4x^2 - 6x - 1 + (-x^2 - 5x + 3) =
-4x^2 - 6x - 1 - x^2 - 5x + 3 =
-5x^2 - 11x + 2 <====
Answer: Slope intercept form is y=mx+b, where m is slope and b is the y-intercept. We can use this form of a linear equation to draw the graph of that equation on the x-y coordinate plane.
Step-by-step explanation: