Answer:
b
Step-by-step explanation:
y = -4/3x + 4
Answer: d. if we do not know the population standard deviation and must use the sample standard deviation.
Step-by-step explanation:
We use t-distribution is quite similar to distribution of z-score .
The interpretation of t-scores and z-scores are same.
T- distribution is used when the data is not accurately normal and when the population standard deviation is unknown.
In the absence of population standard deviation , we use the standard deviation of the sample.
So , We use a t distribution for inference about a population mean instead of the standard Normal distribution if we do not know the population standard deviation and must use the sample standard deviation.
Hence, the correct option is : d. if we do not know the population standard deviation and must use the sample standard deviation.
Answer:
2*10^4= 20000
Step-by-step explanation:
Divide 8.4 by 4.2 and multiply that by 10^7 divided by 10^3
8.4/4.2 = 2
10^7/10^3 =
10^4
Multiply them together:
2*10^4 = 20000
Answer:
A = x^2 - x + xy - y
P = 4x + 2y - 2
Step-by-step explanation:
I hope that is useful for you :)
1. width= 23.8ft
height= 27.3ft
area= 650 sq ft
2. width= 25.8ft
height= 26.4 ft
area= 681 sq ft
