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Lilit [14]
3 years ago
12

One major reason that the two-sample t procedures are widely used is that they are quite robust. What does this mean? t procedur

es do not require that we know the standard deviations of the populations. Confidence levels and P-values from the t procedures are quite accurate even if the population distribution is not exactly Normal. t procedures compare population means, a comparison that answers many practical questions.
Mathematics
1 answer:
Monica [59]3 years ago
4 0

Answer:

Confidence levels and P-values from the t procedures are quite accurate even if the population distribution is not exactly Normal

Step-by-step explanation:

Confidence levels and P-values from the t procedures are quite accurate even if the population distribution is not exactly Normal

there is a general rule that depicts that T is okay to use when n >30. also when the sampling method for each sample is simple random sampling and samples are independent.

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What is the solution to the inequality a - 1 > 11
Vanyuwa [196]
It would be a > 12, move all terms to one side and then solve for x. make sure if you divide then you flip the term
8 0
3 years ago
What number must be added to the expression below to complete the<br> square?<br> x² - 18x
kiruha [24]

Answer:

\boxed {\boxed {\sf 81}}

Step-by-step explanation:

The standard form of a quadratic is:

ax^2+bx+c

To complete the square, the a (leading coefficient) must be 1 and there can only be terms with variables on one side.

The expression given:

x^2-18x

follows these rules. Next, we divide the b (linear coefficient) by 2, then square it. Basically:

(\frac{b}{2})^2

The b in the expression is -18.

(\frac{-18}{2})^2

(-9)^2= -9*-9= 81

This is the number that is added.

5 0
3 years ago
Which number line represents the solution set for the inequality 3(8 – 4x) &lt; 6(x – 5)?
rewona [7]

Answer:

2nd option.

Step-by-step explanation:

3(8 - 4x) < 6(x - 5)

24 - 12x < 6x - 30

-12x - 6x < -30 - 24

-18x < -54

x > 3

6 0
3 years ago
Read 2 more answers
The fraction four fifths is equivalent to what percent
Alika [10]

Answer:

<u>The fraction four-fifths is equivalent to </u><u>80%</u><u>.</u>

6 0
3 years ago
Read 2 more answers
I need help with this please and thank you.
SashulF [63]

Answer: I believe the answer would be as follows:

8.431 grams

5.46 seconds

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900 miles

Step-by-step explanation:

it would first be which has the largest number after the decimal point, so if there’s three it goes first (0.12*3*). Then you would pick the one that is the smallest form of measurement, which would be meters in this case.


Hope this helped!

3 0
2 years ago
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