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lilavasa [31]
3 years ago
12

The average height of adult females is 64.4 inches, with a standard deviation of 2.3 inches and a normal distribution. Rayna is

67.1 inches tall. What is the standardized score for Rayna’s height?
A. -1.17
B. 1.17
C. -0.17
D. 0.17
E. Unable to determine the standardized score
Mathematics
2 answers:
andrew11 [14]3 years ago
8 0
The correct answer is B! I hope that helped. Enjoy the rest of you day :)
victus00 [196]3 years ago
6 0

Answer:

B. 1.17

Step-by-step explanation:

The z-score is:

z = (x − μ) / σ

z = (67.1 − 64.4) / 2.3

z = 1.17

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3 1/2 - 1 1/3 x x= 1
slamgirl [31]

Answer:

The value of x for the given expression is \frac{15}{8}

Step-by-step explanation:

Given as :

<u>The expression is written </u>

3\dfrac{1}{2} - 1\dfrac{1}{3} × x = 1

Or, 1\dfrac{1}{3} × x = 3\dfrac{1}{2} - 1

Or, \frac{(1\times 3) + 1}{3} × x = \frac{(3\times 2) + 1}{2} - 1

Or, \dfrac{4}{3} × x = \dfrac{7}{2} - 1

Or,  \dfrac{4}{3} × x = \dfrac{7-2}{2}

Or, \dfrac{4}{3} × x = \dfrac{5}{2}

∴ x = \frac{\frac{5}{2}}{\frac{4}{3}}

Or, x = \frac{5\times 3}{2\times 4}

I.e x = \frac{15}{8}

So, The value of x = \frac{15}{8}

Hence The value of x for the given expression is \frac{15}{8} Answer

6 0
3 years ago
Laura drove 638 miles in 11 hours at the same rate how long would it take her to drive 406 miles
shusha [124]

Answer:

Step-by-step explanation:

This is a d = rt problem; but since it is linear, then proportions will work too. Set up the proportion with miles on top and hours on the bottom:

\frac{miles}{hrs}:

Then put the numbers in where they go, keeping in mind that miles goes with miles and hours goes with hours in the ratios, and that our unknown is time (hours):

\frac{miles}{hrs}:\frac{638}{11}=\frac{406}{x} and cross multiply to solve:

638x = 4466 so

x = 7 hrs

6 0
2 years ago
<img src="https://tex.z-dn.net/?f=%20%7B10%7D%5E%7B2%7D%20%20%2B%207x%20%2B%201" id="TexFormula1" title=" {10}^{2} + 7x + 1" al
irina1246 [14]

Answer:

factors of 7: 1, 7

factors of 10: 2, 5

1*-2 = -2

7*-5 = -35

...

-35 + -2 = -37

Step-by-step explanation:

8 0
2 years ago
A dice is tossed 60 times and the number it lands on is
cluponka [151]

Answer:

That is, you'd expect  of the rolls to be 1,  of the rolls to be 2,  of the rolls to be 3, and so on.

Step-by-step explanation:

5 0
3 years ago
PLEASE HELP I REALLY NEED HELP PLEASE
Dima020 [189]

Answer:

the absolute value of -70 is 70 so they would be equal

hope I helped

4 0
2 years ago
Read 2 more answers
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