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cricket20 [7]
3 years ago
14

What shape is the 1st one? I already know the second one

Mathematics
1 answer:
Agata [3.3K]3 years ago
4 0

the first one is a quadrilateral

Step-by-step explanation:

a quadrilateral have four side

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Which distribution is used to test the claim that women have a higher mean resting heart rate than men?
xeze [42]

This question is incomplete, the complete question is;

Assume that two samples are independent simple random samples selected from normally distributed populations, and do not assume that the population standard deviations are equal. Which distribution is used to test the claim that women have a higher mean resting heart rate than men?

A.t

B.F

C.Normal

D. Chi-square

Answer:

A) t  test

Step-by-step explanation:

A t-test uses sample information to assess how plausible it is for the population means μ1​ and μ2​ to be equal.

The formula for a t-statistic for two population means (with two independent samples), with unknown population variances shows us how to calculate t-test with mean and standard deviation and it depends on the assumption of having an equal variance or not.

If the variances are assumed to be not equal,

he formula is:

t =  (bar X₁ - bar X₂) / √( s₁²/n₁ + s₂²/n₂ )

If the variances are assumed to be equal, the formula is:

t =  (bar X₁ - bar X₂) / √ (((n₁ - 1)s₁² + (n₂ - 1)s₂²) / (n₁ + n₂ - 2)) ( 1/n₁ + 1/n₂)

it called t-test for independent samples because the samples are not related to each other, in a way that the outcomes from one sample are unrelated from the other sample.

hence option A is correct. t test

4 0
3 years ago
What is 11.42424242 converted into a rational expression in the form of a fraction?
tester [92]
The answer is 11 and 14/33. 

3 0
3 years ago
I need help with this question!<br> Experts only please <br><br> Will mark brainliest
Naily [24]
3x + 2y(100)
yes he was correct
2 cups are added each time so 2 times 100 is 200 add the 3 you have 203.
i know i’m not an expert but i wanted to help :)
4 0
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Find the y intercepts I'll mark the brainliest<br>​
vivado [14]

Answer:

1. (0,-2)

2. (0,8)

3. (0,7)

4. (0 , \frac{1}{2})

5. (0,-3.5)

6. (0,-4)

7. (0,0)

8. (0,-4)

9. (0,5)

10. (0,0)

Step-by-step explanation:

there are 10 boxes in total, slope is y = mx + b

the slope is always the constant.

constant: number without a variable.

y - intercept:

y = mx + <u>b</u>

<u>if there is nothing after the slope it means the y -intercept is 0</u>

<u><em>The Kid Laroi</em></u>

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Whats 9+10?<br><br> A. 21<br> B. 19
Airida [17]

Answer:

LOL it's 19 what grade are you in?

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