Answer:
Translation 4 units to the left., followed by
a translation 1 unit down.
Step-by-step explanation:
The parent function is y = x^2 which is a parabola that opens upwards and has a vertex at the point (0,0).
Y = (x + 4)^2 is the graph of x^2 translated 4 units to the left.
The - 1 translates the graph down 1 unit.
So the vertex of the new graph is at (-4, 1).
Answer:
Your friend scored 62
Step-by-step explanation:
Let your friend's score = x
140/100 * x = 86.8 Starting statement
1.4x = 86.8 % has been changed to a decimal
1.4x = 86.8/1.4 Divide by 1.4
x = 86.8/1.4
x = 62 Answer
Answer:
2 3/8
Step-by-step explanation:
If what you're saying it 3 1/8 - 3/4 then...
3 1/8 - 3/4
3 1/8 - 6/8
25/8 - 6/8
19/8
2 3/8
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.