Answer:
infinite many solutions
Step-by-step explanation:
The answer is:
D. <span>y-4<3x-1</span>
Answer:
Hourly growth rate is 4.24%
Step-by-step explanation:
The formula or exponential growth is given by:
![y = a*(1+r)^n](https://tex.z-dn.net/?f=y%20%3D%20a%2A%281%2Br%29%5En)
Where
y is the instantaneous value of growing culture
a is the initial value of growing culture
r is the 'hourly' growth rate
n is the number of hours passed
As per given values:
y = 1997; a = 1800; n = 2.5
![1997 = 1800*(1+r)^{2.5}](https://tex.z-dn.net/?f=1997%20%3D%201800%2A%281%2Br%29%5E%7B2.5%7D)
![1.10944=(1+r)^{2.5}](https://tex.z-dn.net/?f=1.10944%3D%281%2Br%29%5E%7B2.5%7D)
![1+r = 1.0424](https://tex.z-dn.net/?f=1%2Br%20%3D%201.0424)
Hence, growth rate is:
r = 0.0424 = 4.24%
Answer:
To use a paired t-test
Step-by-step explanation:
t-tests are essentially tests carried out to compare two different groups to check if there is a major difference in their performances or results which may be related in certain characteristics.
A paired (correlated) t-test is used when there are matched pair of similar units or instances of repeated measurements.
In this case, Mary has to use a paired t-test because the samples (students) have high similarity in characteristics. The students in question has to be from the same class to test her hypothesis (similar characteristics).
Answer:
B and C. can you select more than one?