Add 0.2x to both sides
1.2x+0.7= 1
1.2x=.3
x=.3/1.2
x=.25
option #2
subtract .7 on both sides
x=1-.7-.2x
x=.3-.2x
1.2x=.3
x=.25
Answer: 130
Step-by-step explanation:
--> first solve sqr-->2-64/4+144
-->perform division next as per DMAS rule-->64÷4=16--> 2-16+144
--> now perform addition and subtraction-->2-16-14--> -14+144= 130
Answer:
8/5
Step-by-step explanation:
When a researcher needs to compare means for a variable grouped into two
categories based on some less-than interval variable, a t-test is appropriate.
To add, The analysis of two populations means through the use of
statistical examination is called a t-test. Small sample sizes commonly
use a t-test with two
samples. <span> What statisticians call as test statistics are
identified as t-values. A systematized value that is calculated from sample
data during a hypothesis test is called a test statistic. The procedure that
calculates the test statistic compares your data to what is expected under the </span>null
hypothesis<span>.
You already have an experience with the basic principles behind a t-test if you’ve
tried to communicated with a distracted teenager.</span>
