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Natali5045456 [20]
3 years ago
6

Provided below are summary statistics for independent simple random samples from two populations. Preliminary data analyses indi

cate that the variable under consideration is normally distributed on each population. Decide whether use of the pooled​ t-test and pooled​ t-interval procedure is reasonable. x overbar 1equals461.8​, s 1equals46.4​, n 1equals9​, x overbar 2equals391.6​, s 2equals99.2​, n 2equals20 Is use of the pooled​ t-test and pooled​ t-interval procedure reasonable or not​ reasonable? Reasonable
Mathematics
1 answer:
Bezzdna [24]3 years ago
7 0

Answer:

Explained

Step-by-step explanation:

Not reasonable, because it is not given or mentioned in the question that population standard deviation are equal. Although, use of the pooled t-test and pooled t-interval procedure is reasonable because the population follows normal distribution.

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Find the total weekly earnings for a waitress with a weekly salary of $257 plus a 4% commission on dinners, if the total worth o
ss7ja [257]
The waitress earns $425 weekly.

Work:
Use proportions.
x 4
------- = ------
4,200 100

4,200 x 4 = 16800
100 multiply x = 100x
16800 divided by 100 = 168
Commission = $168
Base salary = $257
$168 + $257 = $425
8 0
3 years ago
Which sentence can represent the inequality 2.4 (6.2 minus x) greater-than negative 4.5?
-BARSIC- [3]

Answer: Choice B

Two and four tenths multiplied by the difference of six and two tenths and a number is more than negative four and five tenths.

======================================================

Explanation:

2.4 = 2 + 0.4

2.4 = 2 and 4/10

2.4 = 2 and 4 tenths

2.4 = two and four tenths

-------------------

Through similar reasoning,

6.2 = six and two tenths

And also,

-4.5 = negative four and five tenths

---------------------

Notice how 6.2 - x translates into "difference of six and two tenths and a number"

We then multiply that by 2.4, aka two and four tenths.

So that's how we get the phrasing "Two and four tenths multiplied by the difference of six and two tenths and a number"

All of this is greater than -4.5 aka negative four and five tenths.

This points us to Choice B as the final answer.

7 0
3 years ago
Read 2 more answers
1.which side of AFED does AB in AABC correspond to?
erma4kov [3.2K]

Rotate one of them so the right angle is in the same orientation as the other one.

1. AB = DE

2. CB = FE

3. AC = DF

4. Compare the length of two known sides: cb and EF

CB = 3 and EF = 8

8/3 = 2 2/3 scale factor

5. Ab is side de. Multiply the length of ab by the scale factor:

4 x 2 2/3 = 10 2/3

6. FD = sqrt ( 10 2/3^2 + 8^2)

FD = 13 1/3

6 0
3 years ago
Write the equation for the area (A) in terms of length (l) of a playground if the width (w) is one half as long as the length (l
Dvinal [7]
Let, the length = l
Width = l/2

Area = l * w = l * l/2 = l²/2

So, Your Final Answer would be  A = l²/2

Hope this helps!
5 0
3 years ago
PLS I NEED RELLAY NEED HELP RIGHT NOW
Margaret [11]

Answer:

40%

Step-by-step explanation:

\frac{8}{20} = \frac{2}{5}

\frac{2}{5} = 0.40

0.40 = 40%

5 0
3 years ago
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