3 years ago

Write the relation as a set of ordered pairs.

Mathematics

1 answer:

ankoles [38]3 years ago

7 0

Answer:

option B is the answer.

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300 juniors at Central High School took the ACT last year. The scores were distributed normally with a mean of 24 and a standard

Usimov [2.4K]

Answer:

150 students

Step-by-step explanation:

According to statement we have the following information

number of juniors=n=300

mean score=24

standard deviation score=4

The number of students that score above 24 is determined by

Number of students score above 24=number of juniors* P(student score above 24)

P(student score above 24)=P(x>24)=P(x-mean/sd>24-24/4)=P(z>0)=0.5.

Students score above 24=np=300*0.5=150

Hence there are 150 students scored above 24.

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4 years ago

A tobacco company claims that the amount of nicotine in its cigarettes is a randomvariable with mean 2.2 mg and standard deviati

Genrish500 [490]

Answer:

0.0000

Unusual

Step-by-step explanation:

Given that a tobacco company claims that the amount of nicotine in its cigarettes is a random variable with mean 2.2 mg and standard deviation .3 mg.

i.e. population parameters are

$\mu =2.2 \\s = 0.3$

The approximate probability that the sample meanwould have been as high or higher than 3.1

$=P(X\geq 3.1)\\=P(Z\geq \frac{3.1-2.2}{\frac{0.3}{\sqrt{100} } } )\\=P(Z\geq 30)\\$

=0.0000

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4 years ago

What is the solution to this equation?

sattari [20]

Answer:

Step-by-step explanation:

x - 9 = 17

x = 26

the answer is D

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3 years ago

Which equation has no solution?

Andreas93 [3]

Answer:

D has no solution

I hope this helps a little bit.

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3 years ago

Subtotal: $325.00<br>Sales tax 6%

Otrada [13]

Answer:

19.5

Step-by-step explanation:

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4 years ago

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