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Marat540 [252]
3 years ago
6

Can someone help? i dont understand it really well

Mathematics
1 answer:
scoundrel [369]3 years ago
3 0
The answer is the first one
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The following histogram shows the relative frequencies of the heights, recorded to the nearest inch, of a population of women. T
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Answer:

The following histogram shows the relative frequencies of the height recorded to the nearest inch of population of women the mean of the population is 64.97 inches and the standard deviation is 2.66 inches

(a) Based on the histogram, what is the probability that the selected woman will have a height of at least 67 inches? Show your work

Answer:

0.22268

Step-by-step explanation:

z-score is z = (x-μ)/σ,

where x is the raw score

μ is the population mean

σ is the population standard deviation.

(a) Based on the histogram, what is the probability that the selected woman will have a height of at least 67 inches? Show your work

At least means equal to or greater than 67 inches

z = 67 - 64.97/2.66

z = 0.76316

P-value from Z-Table:

P(x<67) = 0.77732

P(x>67) = 1 - P(x<67) = 0.22268

The probability that the selected woman will have a height of at least 67 inches is 0.22268

Step-by-step explanation:

6 0
3 years ago
A group of 3 friends spends a total of $17.25 for brunch at a restaurant before tax and tip. Everyone orders the same thing: scr
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Answer:

17.25/3 = 5.75

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You divide 17.25 by 3.

It equals 5.75. Each friend has 5.75 on spend on brunch.

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Is 7/3 a rational number ?
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Answer: Yes

Step-by-step explanation: To determine whether 7/3 is a rational number, remember all fractions either positive or negative are rational numbers.

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To be able to do the problem 5(10 + 4) mentally, Zack does 50 + 20 instead of 5(14).
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This is because you multiply the number outside the parentheses into the numbers inside the parentheses.

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