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Maksim231197 [3]
2 years ago
9

Please help me now I need help

Mathematics
1 answer:
Fudgin [204]2 years ago
4 0

Answer: B

Step-by-step explanation:

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Answer:

a.    0.71

b.    0.9863

Step-by-step explanation:

a. From the histogram, the relative frequency of houses with a value less than 500,000 is 0.34 and 0.37

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P(500000)=P(x=0)+P(x=500)\\\\\\\\=0.34+0.37\\\\\\\\=0.71

Hence, the probability of the house value being less than 500,000 is o.71

b.

-From the info provided, we calculate the mean=403 and the standard deviation is 278 The probability that the mean value of a sample of n=40 is less than 500000 can be calculated as below:

P(\bar X

Hence, the probability that the mean value of 40 randomly selected houses is less than 500,000 is 0.9863

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3 years ago
Two sides of a triangle have lengths 7 and 13.<br><br> The third side has a length that is
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19?

Step-by-step explanation:

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Convert percents to fractions (Write the answer in SIMPLEST FORM)
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1/4;2/5;83/100;3/2;7/10;4/5
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2 years ago
Find x so that l || m.
fredd [130]

Answer:

x = 17

Step-by-step explanation:

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Therefore:

53° + (8x - 9)° = 180°

Solve for x

53 + 8x - 9 = 180

Collect like terms

53 - 9 + 8x = 180

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Subtract 44 from both sides

44 + 8x - 44 = 180 - 44

8x = 136

Divide both sides by 8

8x/8 = 136/8

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