3 years ago

Can u plz help me idk the answer plzz help!!!!

Mathematics

1 answer:

Tju [1.3M]3 years ago

8 0

You have to know what it is before you solve the problem

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Suppose speeds of vehicles traveling on a highway have an unknown distribution with mean 63 and standard deviation 4 miles per h

Mashutka [201]

Answer:

The standard deviation for the sample mean distribution=0.603

Step-by-step explanation:

We are given that

Mean, $\mu=63$

Standard deviation, $\sigma=4$

n=44

We have to find the standard deviation for the sample mean distribution using Central Limit Theorem for Means.

Standard deviation for the sample mean distribution

$\sigma_x=\frac{\sigma}{\sqrt{n}}$

Using the formula

$\sigma_x=\frac{4}{\sqrt{44}}$

$\sigma_x=\frac{4}{\sqrt{2\times 2\times 11}}$

$\sigma_x=\frac{4}{2\sqrt{11}}$

$\sigma_x=\frac{2}{\sqrt{11}}$

$\sigma_x=0.603$

Hence, the standard deviation for the sample mean distribution=0.603

6 0

2 years ago

WILL GIVE BRAINLIEST IF YOU HELP ME

Nady [450]

The answer to your question is 1 and 1/2

4 0

2 years ago

Corey has 140 marbles. He gives 16 to his younger brother. He divides the rest equally into four bags. How many go in each bag?

madreJ [45]

31 marbles would go into each bag.

8 0

2 years ago

Factor out the greatest common factor. 6x^5-15x^2+12x=?

jok3333 [9.3K]

Answer:

Factor GCF: 3x(2x⁴ - 5x + 4)

Step-by-step explanation:

Simply take out the greatest variable first and then take out the GCF of the numbers to find out factored GCF.

5 0

2 years ago

You use 4 gallons of water on 30 plants in your garden. At that rate, how much water will it take to water 45 plants?

Wewaii [24]

Write a proportion like so:

4 gallons/30 plants= x gallons/45 plants

Cross multiply to find the value of x
4*45= 180
180/30= 6=x

Final answer: 6 gallons

4 0

2 years ago

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