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djverab [1.8K]
3 years ago
11

If a baseball player has 5 hits in 20 at bats, what is the probability in the decimal to the thousandths place that he will get

a hit in the next at-bat
Mathematics
1 answer:
k0ka [10]3 years ago
5 0

Answer:

Probability = 0.250

Step-by-step explanation:

Given

Hits = 5

Bats = 20

Required

Determine the probability of hit in next at-bat

This question illustrates theoretical probability and the required probability is calculated using:

Probability = \frac{Events\ Occurrence}{Trials}

In this case, we have:

Probability = \frac{Hits}{Bats}

Probability = \frac{5}{20}

Probability = 0.250

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The amounts of nicotine in a certain brand of cigarette are normally distributed with a mean of 0.917 g and a standard deviation
Nutka1998 [239]

Answer:

z = \frac{0.872-0.917}{\frac{0.303}{\sqrt{37}}}= -0.903

And we can find this probability to find the answer:

P(z

And using the normal standar table or excel we got:

P(z

Step-by-step explanation:

Let X the random variable that represent the amounts of nocatine of a population, and for this case we know the distribution for X is given by:

X \sim N(0.917,0.303)  

Where \mu=0.917 and \sigma=0.303

We have the following info from a sample of n =37:

\bar X= 0.872 the sample mean

And we want to find the following probability:

P(\bar X \leq 0.872)

And we can use the z score formula given by;

z=\frac{x-\mu}{\frac{\sigma}{\sqrt{n}}}

And if we find the z score for the value of 0.872 we got:

z = \frac{0.872-0.917}{\frac{0.303}{\sqrt{37}}}= -0.903

And we can find this probability to find the answer:

P(z

And using the normal standar table or excel we got:

P(z

6 0
3 years ago
I need help!! Don't just answer for the points!!
Kazeer [188]

Answer: Equation: E= 20H

Earning's after 15 hours: E= 20(15)

                                          E = 300

Step-by-step explanation:

The equation would be E =20H. E means her total earnings. 20 is how much money she earns per hour. H is how many hours she tutors. If you put it all together, you get E = 20H.

To solve how much she would get for 15 hours, plug in 15 for H so E=20(15). 20 x 15 = 300. Therefore, she will get $300 after teaching for 15 hours.

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15-8x Choose ALL of the statements that are TRUE. The factors are 8 and x. The coefficient is -8. The constant is -8. The terms
baherus [9]
<h3>3 Answers:</h3>
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  • Constant is 15

Explanation:

The coefficient is the number just to the left of the variable. So that's why -8 is the coefficient for -8x. This is the variable term while 15 is the constant (it has no variable multiplied with it). The two terms are 15 and -8x since we can write 15-8x as 15+(-8x). Terms are separated by a plus sign.

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Answer:

4

Step-by-step explanation:

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Now lets solve :)

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