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denis-greek [22]
3 years ago
13

When a researcher needs to compare means for a variable grouped into two categories based on some less-than interval variable, a

n _ in appropriate?
Mathematics
1 answer:
kodGreya [7K]3 years ago
8 0


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>

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Kavi solved the system
Marianna [84]

Answer:

She should have substituted y = 17 - 2x in the first equation

Step-by-step explanation:

3x + 4y = 33

2x + y = 17

y = 17 - 2x

3x + 4(17 - 2x) = 33

3x + 68 - 8x = 33

5x = 35

x = 7

y = 17 - 2(7)

y = 3

x = 7, y = 3

Only one solution

6 0
3 years ago
13. Nathan completed 60% of the passes he attempted during the last football season. If he attempted 90 passes, how many did he
shutvik [7]

Answer:

54 passes

Step-by-step explanation:

90 x 0.6 = 54

5 0
3 years ago
Solve the system by substitution.<br><br> y=−3x-2<br> -7x+3y=10 <br><br> PLEASE HELP
enyata [817]
Y=-3x-2
subsitute -3x-2 for y
-7x+3(-3x-2)=10
distribute
a(b+c)=ab+ac
3(-3x-2)=-9x-6

-7x-9x-6=10
add like terms
-16x-6=10
add 6
-16x=16
multiply -1
16x=-16
divide 16
x=-1

subsitute
y=-3x-2
y=-3(-1)-2
y=3-2
y=1



x=-1
y=1

(x,y)
(-1,1)
7 0
3 years ago
Whats the answer giving brainliest to the c o rect anwers
Flauer [41]

Answer:

A

Step-by-step explanation:

9/3 is 3

36-3 is 33

6 0
3 years ago
A line passes through the point (3,4) and has a slope of 7. Write an equation for this line
Dmitry [639]

Answer:

y = 7x - 17

Step-by-step explanation:

If you graph the coordinate (3,4) and then apply the slope (7 up / 1 down) , you will end up passing through the point (0,-17) on the y line. The point the line passes on the y line would be the y intercept.

Once you have all the necessary information, you put it into a y=mx+b form. m being the rate or slope, and b being the y-intercept.

8 0
3 years ago
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