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Goryan [66]
2 years ago
13

HELPPP FOR BRIANLEST!!!!

Mathematics
1 answer:
Masja [62]2 years ago
3 0

Answer:

12/17

Step-by-step explanation:

total that are NOT Toe Knows shoe (7) plus total that are NOT pleased (10) and subtract total that are not toe knows and not pleased (5)

7 + 10 - 5 = 12

over total (17)

12/17 doesn't simplify

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mixas84 [53]

Answer:

the answer is 18.l hope is good

8 0
2 years ago
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BRAINIEST IF CORRECT (best to explain it will get it)
lana [24]

Answer:

C.

Step-by-step explanation:

PEMDAS

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5 0
3 years ago
Assume that a simple random sample has been selected from a normally distributed population. Find the test statistic t.
lawyer [7]

Using the t-distribution, it is found that the p-value of the test is 0.007.

At the null hypothesis, it is <u>tested if the mean lifetime is not greater than 220,000 miles</u>, that is:

H_0: \mu \leq 220000

At the alternative hypothesis, it is <u>tested if the mean lifetime is greater than 220,000 miles</u>, that is:

H_1: \mu > 220000.

We have the <u>standard deviation for the sample</u>, thus, the t-distribution is used. The test statistic is given by:

t = \frac{\overline{x} - \mu}{\frac{s}{\sqrt{n}}}

The parameters are:

  • \overline{x} is the sample mean.
  • \mu is the value tested at the null hypothesis.
  • s is the standard deviation of the sample.
  • n is the sample size.

For this problem:

\overline{x} = 226450, \mu = 220000, s = 11500, n = 23

Then, the value of the test statistic is:

t = \frac{\overline{x} - \mu}{\frac{s}{\sqrt{n}}}

t = \frac{226450 - 220000}{\frac{11500}{\sqrt{23}}}

t = 2.69

We have a right-tailed test(test if the mean is greater than a value), with <u>t = 2.69</u> and 23 - 1 = <u>22 df.</u>

Using a t-distribution calculator, the p-value of the test is of 0.007.

A similar problem is given at brainly.com/question/13873630

8 0
2 years ago
|5-x|-|x+8|, if x&gt;5
Alex73 [517]

Answer:

just do it on ur caslc im pretty sure it would work

Step-by-step explanation:

3 0
2 years ago
Find the area of a rectangle with a length of 2 ⅔ inches and a width of ¾ inches. Please help! Worksheet is due TODAY!!
galina1969 [7]

Answer:

6 5/6

Step-by-step explanation:

because two sides are the same on each side so 2 2/3×2 and 3/4×2 then add those two answers which are 5 1/3 and 1 1/2 and adding those would be 6 5/6

8 0
2 years ago
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