Answer:
The mean of the z scores will be 0, and the standard deviation of the z scores will be 1.
Step-by-step explanation:
When the data is converted to z-scores the mean and standard deviation no longer stay the same. Both these quantities are transformed into news values.
Values converted to z scores follow a standard Normal curve. This curve is symmetric about the mean. The mean of standard normal curve is 0 with a standard deviation of 1.
Therefore, the correct answer is:
The mean of the z scores will be 0, and the standard deviation of the z scores will be 1.
Answer:
Step-by-step explanation:
Given
y = 3x + 2
Comparing with y = mx + c
slope (m) = 3
y-intercept (c) = 2
X=10.13 is the correct answer I think
Answer:
120 routes are possible.
Step-by-step explanation:
The delivery driver has time to make deliveries at 3 locations among the 6 locations remaining.
So, the number of ways of choosing 3 out of 9 locations is given by :
6P3 ways (permutation because order of locations will matter)
= =
=
Hence, 120 different routes are possible.
Answer:
The vertex for the function f(x) = 3(x – 2)2 + 4 is at (2, 4).
Step-by-step explanation:
Find the vertex for f(x) = 3 (x - 2)^2 + 4
f(x) = 3 (x - 2)^2 + 4 can also be written as:
y = 3 (x - 2)^2 + 4
To find critical points, first compute f'(x):
d/(dx)(3 (x - 2)^2 + 4) = 6 (x - 2):
f'(x) = 6 (x - 2)
Solve 6 (x - 2) = 0
6x - 12 = 0
6x = 12
x = 2
iI you substitute x = 2 in 3 (x - 2)^2 + 4 then you get:
y = 3 (x - 2)^2 + 4
x = 2
y = 3 (2 - 2)^2 + 4
y = 3 (0)^2 + 4
y = 3 (0) + 4
y = 4
Answer: The vertex for the function f(x) = 3(x – 2)2 + 4 is at ( 2, 4 ).