Answer:
70 days
Step-by-step explanation:
that is the procedure above
500 + 400 + 500 + 400 = 1800 400 divided by 2 = 200 and 500 divided by 2 = 250 1800 + 250 + 200 = (((((2250)))))
Given Information:
Population mean = p = 60% = 0.60
Population size = N = 7400
Sample size = n = 50
Required Information:
Sample mean = μ = ?
standard deviation = σ = ?
Answer:
Sample mean = μ = 0.60
standard deviation = σ = 0.069
Step-by-step explanation:
We know from the central limit theorem, the sampling distribution is approximately normal as long as the expected number of successes and failures are equal or greater than 10
np ≥ 10
50*0.60 ≥ 10
30 ≥ 10 (satisfied)
n(1 - p) ≥ 10
50(1 - 0.60) ≥ 10
50(0.40) ≥ 10
20 ≥ 10 (satisfied)
The mean of the sampling distribution will be same as population mean that is
Sample mean = p = μ = 0.60
The standard deviation for this sampling distribution is given by

Where p is the population mean that is proportion of female students and n is the sample size.

Therefore, the standard deviation of the sampling distribution is 0.069.
If you would like to solve <span>2/5 * (15x - 20) = 3 * (3x - 4), you can do this using the following steps:
</span>2/5 * (15x - 20) = 3 * (3x - 4)
6x - 8 = 9x - 12
-8 + 12 = 9x - 6x
4 = 3x
x = 4/3 = 1 1/3
The correct result would be 4/3.