In a survey, 600 adults in a certain country were asked how many hours they worked in the

Mathematics

1 answer:

Snowcat [4.5K]3 years ago

5 0

Answer:

C. Correct

Step-by-step explanation:

The interpretation of a confidence interval of x% is that we are x% that this interval contains the mean of the population.

So, for example, the interpretation of a confidence interval of 95% is that we are 95% that this interval contains the mean of the population.

In this problem, we have that:

Based on the results, a 95% confidence interval for mean number of hours worked was lower bound: 41.5 and upper bound: 45.6.

Also, the following affiration:

(A) There is a 95% chance the mean number of hours worked by adults in this country in the previous week was between 41.5 hours and 45.6 hours.

This is correct

So, the answer is:

C. Correct

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2 years ago

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Find the number of cookies:

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Since 1 dozen = 12:

$\text {Cookies = } 1 \dfrac{1}{2} \times 12$

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Answer: Unit rate for cookies sold = 54/hour
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4 years ago

Lana is the oldest of four sisters. Her youngest sister is half her age. The other two sisters are twins 2 years younger than La

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3 years ago

Given right triangle MNO, which represents the value of cos(M)?

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Answer:

Option B. MN/MO

Step-by-step explanation:

In a right angle triangle cosine of any acute angle = Base/ Hypotenuse

In the ∠ NMO Hypotenuse is MO and base of the triangle is MN.

Therefore cos (M) = Base / Hypotenuse = MN / MO

Therefore option B is the right answer.

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