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goblinko [34]
3 years ago
15

Will give brainliest

Mathematics
1 answer:
lisabon 2012 [21]3 years ago
5 0
I believe if I did the expression correctly, the solution is 1

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PLSSS HELP IF YOU TURLY KNOW THISS
Crank

Answer:

7/10

Step-by-step explanation:

hope this helps

6 0
2 years ago
Suppose that the walking step lengths of adult males are normally distributed with a mean of 2.5 feet and a standard deviation o
Mumz [18]

Answer:

0% probability that the mean of the sample taken is less than 2.2 feet.

Step-by-step explanation:

To solve this question, we need to understand the normal probability distribution and the central limit theorem.

Normal Probability Distribution:

Problems of normal distributions can be solved using the z-score formula.

In a set with mean \mu and standard deviation \sigma, the z-score of a measure X is given by:

Z = \frac{X - \mu}{\sigma}

The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the p-value, we get the probability that the value of the measure is greater than X.

Central Limit Theorem

The Central Limit Theorem establishes that, for a normally distributed random variable X, with mean \mu and standard deviation \sigma, the sampling distribution of the sample means with size n can be approximated to a normal distribution with mean \mu and standard deviation s = \frac{\sigma}{\sqrt{n}}.

For a skewed variable, the Central Limit Theorem can also be applied, as long as n is at least 30.

Mean of 2.5 feet and a standard deviation of 0.2 feet.

This means that \mu = 2.5, \sigma = 0.2

Sample of 41

This means that n = 41, s = \frac{0.2}{\sqrt{41}}

Find the probability that the mean of the sample taken is less than 2.2 feet.

This is the p-value of Z when X = 2.2 So

Z = \frac{X - \mu}{\sigma}

By the Central Limit Theorem

Z = \frac{X - \mu}{s}

Z = \frac{2.2 - 2.5}{\frac{0.2}{\sqrt{41}}}

Z = -9.6

Z = -9.6 has a p-value of 0.

0% probability that the mean of the sample taken is less than 2.2 feet.

6 0
3 years ago
If the measure of a central angle is 28°, then to find the measure of its arc, you would need to do which of the following?
MaRussiya [10]

It is A. nothing, They are Equal


YW, have a nice day.

5 0
3 years ago
Read 2 more answers
write an equation of the line that passes through the given point and has the given slope slope is -3 (-5, 4)
Paraphin [41]

point slope form of a line

y-y1 = m(x-x1)

y-4 = -3(x--5)

y-4 =-3(x+5)

to change to slope intercept form

dstribute

y-4 = -3x-15

add 4 to each side

y = -3x-15+4

y = -3x-11

3 0
3 years ago
What is the explicit rule for the sequence?
scZoUnD [109]
Hello, sorry this is a little late!

I believe the correct answer to your question would best be Option A.

I can confirm this is 100% correct!

Hope this helps and have a great rest of your day :)
5 0
3 years ago
Read 2 more answers
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