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lesya692 [45]
2 years ago
9

Are the ratios 2:1 aand 18:9 equivalent

Mathematics
1 answer:
Norma-Jean [14]2 years ago
4 0
First bring them to common denominator.
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A quality control engineer is testing the battery life of a new smartphone. The company is advertising that the
DIA [1.3K]

The question requires stating the Null and Alternative hypothesis for the scenario described :

Answer:

H0 : μ = 24

H1 : μ < 24

Step-by-step explanation:

The claim or hypothesis to be tested in a statistical problem or analysis is the alternative hypothesis. This is usually the opposite of the Null hypothesis which is the usually the initial truth until there is significant evidence provided using statistical test to prove otherwise.

The null hypothesis, H0 in the scenario above is :

H0 : μ = 24 ( average battery life is 24 hours)

The alternative hypothesis is the claim, that is. The mean battery life not up to 24 hours ;

H1 : μ < 24

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2 years ago
What is the area of the shaded triangle?
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Answer:30

Step-by-step explanation: act like both of the triangles are there, that is a rectangle 6 times 10 equals 60. 60 divided by 2 is 30

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3 years ago
what is the probability that a card picked at random from a 52-card deck of playing cards is a club or a jack?
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|\Omega|=52\\ |A|=\underbrace{13}_{\text{clubs}}+\underbrace{4}_{\text{jacks}}-\underbrace{1}_{\text{jack of clubs}}=16\\\\ P(A)=\dfrac{16}{52}=\dfrac{4}{13}\approx31\%

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3 years ago
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What is the domain of the relation {(-10, 2), (0,2), (10,0), (10,2)?
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