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2 years ago

20 PIONTS!!!!!PLZ HELP ASAP IM IN THE TEST ON STUDY ISLAND

Mathematics

2 answers:

Advocard [28]2 years ago

7 0

2. The answer for this question

iragen [17]2 years ago

6 0

1. random

2. random

3. random

4. random

5. no

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Leslie makes $17,000 per year. She is paid weekly. What is the amount of her weekly paycheck?

MatroZZZ [7]

B because 17000 divided by 52 is $326.92

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2 years ago

Read 2 more answers

A statistics textbook chapter contains 60 exercises, 6 of which are essay questions. A student is assigned 10 problems. (a) What

Scilla [17]

Answer:

a) P=0.3174

b) P=0.4232

c) P=0.2594

d) The shape of the hypergeometric, in this case, is like a binomial with mean np=1.

Step-by-step explanation:

The appropiate distribution to model this is the hypergeometric distribution:

$P(X=x)=\frac{\binom{s}{x}\binom{N-s}{M-x}}{\binom{N}{M}}=\frac{\binom{6}{x}\binom{54}{10-x}}{\binom{60}{10}}$

a) What is the probability that none of the questions are essay?

$P(X=0)=\frac{\binom{6}{0}\binom{54}{10-0}}{\binom{60}{10}}\\\\P(X=0)=\frac{1*(54!/(10!*44!)}{60!/(10!*50!)} =\frac{2.3931*10^{10}}{7.5394*10^{10}} = 0.3174$

b) What is the probability that at least one is essay?

$P(X=1)=\frac{\binom{6}{1}\binom{54}{9}}{\binom{60}{10}}\\\\P(X=1)=\frac{6*(54!/(9!*43!)}{60!/(10!*50!)} =\frac{3.1908*10^{10}}{7.5394*10^{10}} =0.4232$

c) What is the probability that two or more are essay?

$P(X\geq2)=1-(P(0)+P(1))=1-(0.3174+0.4232)=1-0.7406=0.2594$

8 0

2 years ago

Use the markings in the image to answer the following questions (drawing not to scale):

olga nikolaevna [1]

Hope this helps!

There are 3 images with full explanation

3 0

2 years ago

PLZ HELP ASAP! WILL GIVE BRAINLIEST AND 30 POINTS!!

Elis [28]

ANSWER
Group A

Step by step explanation
I am bad at explaining things
If we want to find The group with the youngest age , we have to find the mean. The mean , means that we add up all the numbers ( the age) ,then divide them with how much number you added . For example, we add the age of group A 9+10+10+10+10+10+10+10+15+15+15+15+15+15+15+15+17+17+17+17+17+17+17+17+19+19+19+19+19+19=449
Than Count how many people are in group A , group A have 30 people that the number you will be dividing
So 449 divided by 30 is 14.966
That the average

The same go for group B
10+10+10+10+10+10+14+14+14+14+14+18+18+18+18+18+18+25+25+25+25+25+28+28+28+28+29+29+29+29=519

There 30 peoples in group B
519 divided by 30 is 19.7
So the Average of groupB is 19.7

Group a is 14.9 and group B is 19.7
Group A average is smaller than Group B that means ,The average of Group A is younger than Group B so the answer will be group a

Group A is the younger Group then group B

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1 year ago

The graph below represents the rate at which Melanie listens to songs. What is the equation that represents the relationship bet

alexira [117]

Answer:

Step-by-step explanation:

So what you wanna do is look everywhere a point is on a line perfectly. Then see how much it takes per point that's on a line perfectly

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2 years ago