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2 years ago

5

Of the 25 fish in a tropical fish tank, 10 are guppies, 4 are swordtails, and the rest are tetras. One fish is to be randomly se

lected from the fish tank. What is the probability that the fish selected will not be a guppy?

1 answer:

klio [65]2 years ago

5 0

There are 10 guppies, so we do 25-10
Which equals to 15
Answer is 3/5

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The owner of a fish market has an assistant who has determined that the weights of catfish are normally distributed, with mean

LiRa [457]

Answer:

$P(X\geq 3.4)=0.0228$

Step-by-step explanation:

Given the mean is 3.2, standard deviation is 0.8 and the sample size is 64.

-We calculate the probability of a mean of 3.4 as follows:

#First determine the z-value:

$z=\frac{\bar X -\mu}{\sigma/\sqrt{n}}\\\\=\frac{3.4-3.2}{0.8/\sqrt{64}}\\\\=2.000$

#We then determine the corresponding probability on the z tables:

$Z(X\geq 3.4)=1-P(X$

Hence, the probability of obtaining a sample mean this large or larger is 0.0228

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2 years ago

If I have a 74 in geometry, and I have an assignment worth 100 points then I get a zero, what would my grade be?

Paraphin [41]

................

Step-by-step explanation:

it would at LEAST be like around 20-30 because a 0 can drop something FAST

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2 years ago

Solve x3 = 64 over 27.

const2013 [10]

x^3 = 64/27

x^3 = (4*4*4)/(3*3*3)

x^3 = (4/3)^3

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ans is d

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2 years ago

Read 2 more answers

Please can u help simplify

Triss [41]

Answer:

frac{21x^6y^5}{14x^2y^9}

Factor the number =\frac{7\cdot \:3x^6y^5}{14x^2y^9}

Factor the number 14=7. 2 =\frac{7\cdot \:3x^6y^5}{7\cdot \:2x^2y^9}

Cancel\:the\:common\:factor:}\:7 =\frac{3x^6y^5}{2x^2y^9}

Step-by-step explanation:

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2 years ago

Why does the tail approaches the x-axis but never touches it

Brut [27]

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