3 years ago

Which statements must be true to model a data set using a normal distribution?

Mathematics

2 answers:

zalisa [80]3 years ago

4 0

Answer:

The sample must be randomly selected.

The sample size, n, must be at least 30.

Step-by-step explanation:

Plato

Rzqust [24]3 years ago

3 0

Answer:

The sample must be randomly selected.

The sample size, n, must be at least 30.

Step-by-step explanation:

Just took the test

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How old am I if 500 reduced by 2 times<br> my age is 322?

Yuliya22 [10]

Answer:

You are 89 years old.

Step-by-step explanation:

First I subtracted 322 from 500 which got me 178. Then I finally did 178 divided by 2 which got me 89.

Hope this helps you! :)

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2 years ago

Can you guys help me find the slope for the given graph and y-intercept <br> (pictures included)

serious [3.7K]

Answer:

I believe the answer is

$y = \frac{2}{3} x + 1$

slope = 2/3x

y-intercept = 1

Step-by-step explanation:

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3 years ago

Classify the following expression by degree and term: x2y − 7xy + xyz + x

goldfiish [28.3K]

3rd degree polynomial with 4 terms

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2 years ago

Read 2 more answers

Anyone know how to do this?

Lera25 [3.4K]

Answer:

Part A) 25

Part B) 225

Step-by-step explanation:

Part A

The slope of the graph gives us the mile per gallon of the car.

Recall that the slope of the graph is rise over run.

$m = \frac{200}{8} = 25$

Therefore car gets 25 miles per gallon

Part B) Since we know the slope of the direct variation line, we substitute into y=kx to get:

$y = 25x$

To find the number of miles the car travels using 9 gallons, we substitute x=9 to get:

$y = 25 \times 9$

This gives us 225 miles

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2 years ago

John works two jobs. As a security guard he earns per hour. As a landscaper he earns per hour. One week John worked a total of h

wariber [46]

Answer:

john

Step-by-step explanation:

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2 years ago