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masha68 [24]
3 years ago
7

A company claims that its laptops have an average battery life of at least 12 hours. How would you formulate this

Mathematics
1 answer:
Firdavs [7]3 years ago
6 0

Options:

H0 :

H0 : µ =12

H0 > 12> H1

None of these

Answer:

None of these

Step-by-step explanation:

The answer is

H0 : µ ≧ 12

Ha : µ<12

We formulate the null and alternative hypothesis here to state that battery life of the laptop lasts at least 12 hours(more than but not less, null hypothesis) or that it lasts less than 12 hours(alternative hypothesis).

The null hypothesis is the one being tested to know whether we would reject it or not in which case we choose the alternative hypothesis. To test the hypotheses, we do a t test using a significance level of say 0.05(95% confidence interval) and find our p value in order to compare and decide if the null hypothesis would be rejected or not based on statistical significance.

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ladessa [460]

Given:

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Length of one leg = 6 inches

To find:

The length of another leg.

Solution:

We know that, the area of a triangle is

A=\dfrac{1}{2}\times base\times height

In a right angle triangle, the area of the triangle is

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Putting A=18 and leg_1=6, we get

18=\dfrac{1}{2}\times 6\times leg_2

18=3\times leg_2

Divide both sides by 3.

\dfrac{18}{3}=leg_2

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If the triangle is not isosceles triangle, then the length of legs are factors of 36 because half of 36 is 18.

Therefore, the possible pairs of legs are 1 and 36, 2 and 18, 3 and 12, 4 and 9, 6 and 6, 9 and 4, 12 and 3, 18 and 2, 36 and 1.

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3 years ago
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Musya8 [376]

Answer:

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Step-by-step explanation:

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Step-by-step explanation:

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Example:  < means carry, decimal equivalent for checking
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+   1     1     1     1         (8+4+2+1=15)
---<---<----<----<----
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Proceeding similarly,
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