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damaskus [11]
2 years ago
6

When is it appropriate to use the paired t test (involving the mean of the differences)? A. When two independent samples are com

pared. B. When two dependent samples are compared. C. When four samples are compared at once. D. When any two samples are compared.
Mathematics
1 answer:
sveticcg [70]2 years ago
7 0

Answer:

B. Two dependent samples are compared

Step-by-step explanation:

We use it when we are comparing Two dependent samples. The paired t-test can be likened to the repeated measures ANOVA test. Both of these two test are useful when comparing how a static group does in different test conditions.

But the difference between these two are:

We use the paired t-test if the explanatory variable has two levels.

While the Repeated measures ANOVA is used when the explanatory variable has greater than two levels.

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Line r is parallel to line t. Find m<5.
Naddika [18.5K]

Answer:

B. 135

Step-by-step explanation:

According to corresponding angles answer is b

135 is congruent to angle 1 and angle 1 is congruent to angle 5

so if angle 1 is 135 then angle 5 is 135

Brainliest please

Hope this helps

6 0
2 years ago
Read 2 more answers
Omar works as a tutor for $15 an hour and as a waiter for $7 an hour. This month, he worked a combined total of 83 hours at his
Alborosie

Answer: 8t+581

Step-by-step explanation:

<h3> The complete exercise is: "Omar works as a tutor for $15 an hour and as a waiter for $7 an hour. This month, he worked a combined total of 83 hours at his two jobs. Let "t" be the number of hours Omar worked as a tutor this month. Write an expression for the combined total dollar amount he earned this month."</h3><h3 />

Let be "t" the number of hours Omar worked as a tutor this month and "w" the number of hours Omar worked as a waiter this month.

Based on the data given in the exercise, you know that Omar worked a combined total of 83 hours this month.

Then, you can represent the number of hours he worked as a waiter this month with this equation:

w=83-t

Since he earns  $15 per hour working has a tutor and $7 per hour working as a waiter, you can write the following expresion to represent the total money earned:

15t+7w

Since w=83-t, you can substitute it into the expression and then simplify it in order to find the final expression that represents the total amount of money Omar earned this month.

This is:

15t+7(83-t)=15t+581-7t=8t+581

4 0
3 years ago
PLEASE HELPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPP​
Troyanec [42]

Answer:

  • 81/x - 3 = 6
  • 2x - 3 = 15
6 0
2 years ago
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Please HELP!!:) 2. Of the 200 species of birds found in the refuge, 96 have been
dusya [7]

Answer:

48%

Step-by-step explanation:

96 out of the 200 species of birds have been seen nesting. To make it easier, let's make it out of a hundred. Just divide both numbers by 2, this will result in the ratio being 48 out of 100. Now, we have our percentage, 48%.

6 0
3 years ago
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What is the expression that is equivalent to 6(3z-2)?
RoseWind [281]

Answer:

18z-12

Step-by-step explanation:

3 0
3 years ago
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