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3 years ago

Find the proportion of the data that must lie in (M-8σ, M+8σ) when M=7.013 and σ=3.125.

1 answer:

meriva3 years ago

4 0

Assuming a normal distribution, approximately 99.7% of the distribution already falls within 3 standard deviations of the mean. You're asking about how much of it falls within 8 standard deviations of the mean, which may as well be 100%.

If you're asking for more precision, it's roughly 99.99999999999987%.

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Jill rides her bike to her friend’s houses. Marge lives 3 miles away and Rocky lives 5 miles away. Eva lives 4 miles away and Pe

STALIN [3.7K]

Answer:

She will ride an average of 5 miles

Step-by-step explanation:

To calculate the average, add all the values together and divide by the amount of values:

3 + 5 + 4 + 8 = 20

20 ÷ 4 = 5

Average of 5 miles

4 0

3 years ago

The slope of EF¯¯¯¯ is −5/2 .

stellarik [79]

Answer:

LM and NP

Step-by-step explanation:

LM= 2/5

NP=2/5

GH= -5/2

JK= =5/2

4 0

3 years ago

Can someone please help me on this question

Grace [21]

Answer: ? = 72

Step-by-step explanation:

We will set up a proportion to solve.

$\displaystyle \frac{?}{56} =\frac{45}{35}$

Now, we will cross-multiply.

? * 35 = 56 * 45

35? = 2,520

? = 72

3 0

2 years ago

I need an answer! NO LINKS PLS! il give brainlist

cricket20 [7]

Answer:

D. The company's chocolate bars weigh 3.2 ounces on average.

Step-by-step explanation:

We are given that a company claims that its chocolate bars weigh 3.2 ounces on average.

The company took many large samples, and each time the mean weight of the sample was within the 95% confidence interval.

Definition of 95% confidence level: 95% confidence level means a range of values that you can be 95% certain contains the true mean of the population.

Thus by considering definition we can conclude that The company's chocolate bars weigh 3.2 ounces on average.

Thus Option D is correct.

D. The company's chocolate bars weigh 3.2 ounces on average.

4 0

3 years ago

The formula for the volume of a cone is V = jarh, where V is the volume, r is the radius, and h Is the heightWhat is the volume

olga nikolaevna [1]

Given:

The radius, r=4x

The height,

$h=21xy^2$

To find the volume of the cone:

The volume of the cone formula is,

$V=\frac{1}{3}\pi r^2h$

Substitute the values of r and h in the above formula we get,

$\begin{gathered} V=\frac{1}{3}\pi\times(4x)^2\times21xy^2 \\ =\frac{1}{3}\pi\times16x^2\times21xy^2 \\ =\pi\times16x^2\times7xy^2 \\ =112\pi x^3y^2 \end{gathered}$

Hence, the volume of the cone is

$V=112\pi x^3y^2$

Thus, the correct option is option D.

7 0

1 year ago