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Murljashka [212]
2 years ago
12

?..................................................

Mathematics
2 answers:
Lemur [1.5K]2 years ago
5 0
Dang someone already got the answer
liberstina [14]2 years ago
4 0

Answer:

400

Step-by-step explanation:

240 is 60% of 400. That means that 400 people are in the class hope this helps.

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The probability that Barry Bonds hits a home run on any given at-bat is 0.16, and each at-bat is independent.
serious [3.7K]

Answer:

a) 0.0797 = 7.97% probability that the next home run will be on his fifth at-bat.

b) The expected number of at-bats until the next home run is 6.25.

Step-by-step explanation:

For each at bat, there are two possible outcomes. Either it is a home run, or it is not. The probability of an at bat resulting in a home run is independent of any other at-bat, which means that the binomial probability distribution is used to solve this question.

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.

The probability that Barry Bonds hits a home run on any given at-bat is 0.16

This means that p = 0.16

Part A: What is the probability that the next home run will be on his fifth at-bat?

0 on his next 4(P(X = 0) when n = 4)

Home run on his 5th at-bat, with 0.16 probability. So

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

P(X = 0) = C_{4,0}.(0.16)^{0}.(0.84)^{4} = 0.49787136


0.49787136 *0.16 = 0.0797.

0.0797 = 7.97% probability that the next home run will be on his fifth at-bat.

Part B: What is the expected number of at-bats until the next home run?

The expected number of trials for n successes is given by:

E = \frac{n}{p}

In this question, n = 1, p = 0.16. So

E = \frac{1}{0.16} = 6.25

The expected number of at-bats until the next home run is 6.25.

6 0
2 years ago
5) 1 - 13 x 2 + 25 - 3+15 - 3
Valentin [98]

Answer:

if u need to evaluate or simplify its -13×to the 2nd power +35

6 0
3 years ago
Compute the total cost of the meal to the nearest cent: meal costs $24.62 plus 6% tax and 15% tip.​
matrenka [14]

The total cost of the meal is $30.02

Step-by-step explanation:

Given,

Cost of meal = $24.62

Tax = 6%

Tax amount = 6% of cost of meal

Tax\ amount=\frac{6}{100}*24.62\\Tax\ amount=\frac{147.72}{100}\\Tax\ amount=\$1.48

Cost after sales tax = 24.62+1.48 = $26.10

Tip = 15%

Tip amount = 15% of cost after sales tax

Tip\ amount=\frac{15}{100}*26.10\\\\Tip\ amount=\frac{391.5}{100}\\Tip\ amount=\$3.92

Total cost of meal = Cost after sales tax + Tip amount

Total cost of meal = 26.10+3.92 = $30.02

The total cost of the meal is $30.02

Keywords: percentage, sales tax

Learn more about percentages at:

  • brainly.com/question/13087541
  • brainly.com/question/13096411

#LearnwithBrainly

7 0
3 years ago
Help ;-; Im almost overdue and I'n only on Q.13/24
jolli1 [7]

Answer: C (-7/18)

Step-by-step explanation: you flip the denominator and numerator and keep the negative

7 0
2 years ago
Read 2 more answers
Match each graph to its equation.
sertanlavr [38]

Answer:

1- A

2- C

3- B

4- D

Step-by-step explanation:

5 0
2 years ago
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