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3 years ago

Which of the following best defines a function? (4 points)

Mathematics

1 answer:

Art [367]3 years ago

7 0

A function is a special type of relation for which there is a rule that pairs each input with exactly one output.

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In a random sample of 8 people, the mean commute time to work was 33.5 minutes and the standard deviation was 7.2 minutes. A 95

Elina [12.6K]

Answer: Margin of error = 6.58

Confidence interval = (26.91, 40.08)

Step-by-step explanation:

Since we have given that

Sample size n = 8

Sample mean = 33.5 minutes

Population standard deviation = 9.5 minutes

At 95% confidence interval,

α = 0.05

t = 1.96

So, Margin of error is given by

$t\times \dfrac{\sigma}{\sqrt{n}}\\\\=1.96\times \dfrac{9.5}{\sqrt{8}}\\\\=6.58$

Confidence interval would be

Lower limit:

$\bar{x}-6.58\\\\=33.5-6.58\\\\=26.91$

Upper limit:

$\bar{x}+6.58\\\\=33.5+6.58\\\\=40.08$

Hence, the interval would be (26.91, 40.08)

But at standard deviation 7.2 minutes, the confidence interval was (27.5, 39.5)

Confidence interval using the standard normal distribution is wider than the confidence interval using t distribution.

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3 years ago

How many squares will it take to fill the large square

anastassius [24]

Answer:

i believe it would take 16. let me know if thats right?

Step-by-step explanation:

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2 years ago

If 2.2x10^6 - 4.3x10^5 what does this equal

bearhunter [10]

Answer:

If the decimal is being moved to the left, the exponent will be positive. 1.77×10 ...

Step-by-step explanation:

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2 years ago

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ILL BRAINLIEST YOU PLEASE HELP WITH THIS

jeka94

Answer:

3 < x < 27

Step-by-step explanation:

15 - 12 < x < 15 + 12

3 < x < 27

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2 years ago

What Is the slope of the line on the graph?

uranmaximum [27]

1/2 is the slope. You can tell because if you count the rise of one point from the next is one and the run is two.

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2 years ago

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