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3 years ago

How many people were in the sample? 45 90 5 10

Mathematics

2 answers:

diamong [38]3 years ago

7 0

I’m not that sure if the numbers you provided are the ones I am supposed to be adding or the x’s in the graph but here’s an answer for both

Numbers: 150
X:10

If I didn’t understand what to add, please let me know

Nina [5.8K]3 years ago

4 0

10

The x’s represent just the people, and because the bottom line only represents time it doesn’t affect the amount of people.

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Daniel answered 16 questions correctly, left 5 blank and had 4 wrong answers. He also got 8 out of 10 possible points for extra

Varvara68 [4.7K]

Answer:

use your brain dummy!

Step-by-step explanation:

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3 years ago

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It cost Joseph $21.90 to send 146 text messages. How many text messages did he send if he spent $6.45?

Margarita [4]

Answer:

43 messages

Step-by-step explanation:

Given:

146 messages = $21.90

x messages = $6.45

Finding x by cross-multiplication:

x = 146*6.45/21.90 = 43

Hope this helps! :)

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3 years ago

All in image, please help asap

vfiekz [6]

The angle that is same side exterior angle to ∠ABC is ∠EFH.

<h3>How to find angles?</h3>

When parallel line are cut by a transversal line, angle relationships are formed such as corresponding angles, vertically opposite angles, alternate angles, same interior angles, etc.

AD and EG are parallel to each other.

CH is a transversal line to the parallel lines.

Therefore, let's find the angle that has the same relationship as same side exterior angles as angle ABC.

Two angles that are exterior to the parallel lines and on the same side of the transversal line are called same-side exterior angles.

Same side exterior angles are supplementary.

Therefore,

∠ABC and ∠EFH are same side exterior angles.

learn more on angles here: brainly.com/question/24755745

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1 year ago

Is Joan read 74 pages in 4 hours how long will it take her to read 240 pages

kogti [31]

Answer:

It will take her 13 hours

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3 years ago

Ed and Taylor work together on a group quiz that has 20 multiple-choice questions, each with four choices for the possible answe

MissTica

Answer:

a. p = 0.25

b. n = 10, p = 0.25.

c. n = 10, p = 0.25.

d. n = 20, p = 0.25.

Step-by-step explanation:

Binomial probability distribution

The binomial probability is the probability of exactly x successes on n repeated trials, and X can only have two outcomes.

$P(X = x) = C_{n,x}.p^{x}.(1-p)^{n-x}$

In which $C_{n,x}$ is the number of different combinations of x objects from a set of n elements, given by the following formula.

$C_{n,x} = \frac{n!}{x!(n-x)!}$

And p is the probability of X happening.

a. For any single question on the quiz, what is p = chance of a correct guess?

4 options, 1 of which is correct. So

$p = \frac{1}{4} = 0.25$

So p = 0.25.

b. Let X = number of correct guesses that Isabelle makes. What are the values of n and p for the binomial distribution that describes X?

Should be Ed here.

Ed guesses answers for the first 10 questions

This means that $n = 10$ .

p is the same, so n = 10, p = 0.25.

c. Let Y = number of correct guesses that Taylor makes. What are the values of n and p for the binomial distribution that describes Y?

10 question, so $n = 10$ , p is the same.

d. Consider X + Y = total correct guesses that Isabelle and Taylor make. What are the values of n and p for the binomial distribution that describes X + Y?

20 questions, so $n = 20$

10 for Ed, with 0.25 probability, 10 for Taylor, with 0.25 probability. So

$p = \frac{10}{20}*0.25 + \frac{10}{20}*0.25 = 0.125 + 0.125 = 0.25$

So n = 20, p = 0.25.

3 0

3 years ago