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Mumz [18]
4 years ago
13

Please help if you can! I'll mark brainiest if you're right;; Thank you in advance :D

Mathematics
1 answer:
Stels [109]4 years ago
5 0

Answer:

[83, 100]

Step-by-step explanation:

Lowest score to get a B is 80

Total 4 tests,  to get at least a B  :  80 x 4 = 320

Total 3 test scores = 81 + 62 + 94 = 237

So the fourth test to get at least a B: 320 -237 = 83

Answer [83, 100]

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Ierofanga [76]

Answer:

Step-by-step explanation:

To Test :-

H0 :- P = 0.12

H1 :- P ≠ 0.12

P = X / n = 156/800 = 0.195

Test Statistic :-

Z = ( P - P0 ) / ( √((P0 * q0)/n)

Z = ( 0.195 - 0.12 ) / ( √(( 0.12 * 0.88) /800))

Z = 6.5279

Test Criteria :-

Reject null hypothesis if Z > Z(α/2)

Z(α/2) = Z(0.05/2) = 1.96

Z > Z(α/2) = 6.5279 > 1.96, hence we reject the null hypothesis

Conclusion :- We Reject H0  

There is sufficient evidence to support the claim that there is a difference.

7 0
4 years ago
The domain of a function is
kramer

Answer:

The domain of a function is the complete set of possible values of the independent variable. In plain English, this definition means: The domain is the set of all possible x-values which will make the function "work", and will output real y-values.

Step-by-step explanation:

I hope this helped ;)

4 0
3 years ago
If two planes cross one another, then their intersection is two lines.
Sonbull [250]
I do not know the answer to the question
6 0
2 years ago
Please help with this will give BRAINLIST to best answer
Aleonysh [2.5K]

Answer:

pxp^8=12

Step-by-step explanation:

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Adjacent angles describes the relation there
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