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Nat2105 [25]
3 years ago
6

If 18% of the beads in a bag are green, 25% are red, and 40% are purple, what is the probability of choosing a green bead and th

en a purple bead, if you replace the bead in between?
a. 22%

b. 58%

c. 7.2%

d. 4.5%
Mathematics
2 answers:
Elina [12.6K]3 years ago
3 0

the answer is a)22 %

iren2701 [21]3 years ago
3 0

Answer: c. 0.072

Step-by-step explanation:

Given : The probability of getting a green bead = 18% = 0.18

The probability of getting a purple bead = 40% =0.40

If replacement occurs, then the probability of choosing a green bead and then a purple bead will be :-

0.18\times0.40=0.072

Hence, the probability of choosing a green bead and then a purple bead = 0.072

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US average math SAT scores follow a normal distribution with a mean of 505 and a standard deviation of 112. A sample of 64 enter
Hitman42 [59]

Answer:

The claim that the scores of UT students are less than the US average is wrong

Step-by-step explanation:

Given : Sample size = 64

           Standard deviation = 112

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Sample size = 64

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So we will use z test

H_0:\mu \geq 477\\H_a:\mu < 477

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α=0.05

p value > α

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3 years ago
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Step-by-step explanation:

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