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aniked [119]
4 years ago
10

I need help with this problem. Find the standard score (z) such that the area above the mean and below z is about 34% of the are

a under the normal curve.
Mathematics
1 answer:
Natali [406]4 years ago
3 0
<span>For the normal distribution:
one standard deviation from the mean accounts for about 68.2% of the set

</span><span>two standard deviations from the mean account for about 95.4%
and three standard deviations from the mean account for about 99.7%.
Important to Understand z -values as they relate to the Standard Normal curve:
Below: z = 0, z = ± 1, z= ±2 , z= ±3 are plotted.
Note: z = 0 (x value the mean) 50% of the area under the curve is to the left and 50% to the right</span>
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What is the least common multiple of 8 and 12?
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12:12,24,36,48
Least common multiple is 24 because it's less then the other common multiples such as 48
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3 years ago
Sixty-three people participated in a study to see if they were left-brain dominant or right-brain dominant. In the study, the pe
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The two-way table is attached.

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Out of the 63 total, 37 are left brain dominant; this means that 63-37=26 are right brain dominant.

Of the 26 that are right brain dominant, 21 are right handed; this means 26-21=5 are left handed.

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3 years ago
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What is the perimeter of parallelogram HIJK? Round to the nearest hundredth.
bixtya [17]

Answer:

Perimeter of the parallelogram = 26.64 units

Step-by-step explanation:

The perimeter of parallelogram = 2(a + b)

Here a = KJ = 7 units.

b = HK

We need to find the HK using the distance formula.

Distance formula = \sqrt{(x2 - x1)^2 + (y2 - y1)^2}

H = (-4, 3) and k = (-2, -3)

Now plug in x1 = -4, y1 =3, x2 = -2, y2 = -3 in the distance formula

HK = \sqrt{(-2 -(-4))^2 + (-3 - 3)^2}

= \sqrt{(-2 +4)^2 + (-6)^2}

= \sqrt{4 + 36}

= \sqrt{40}

HK = b = 6.32 units

Now plug in a = 7 and b = 6.32 in the perimeter formula, we get

Perimeter = 2(7 + 6.32)

= 2(13.32)

= 26.64 units

Thank you.

6 0
3 years ago
Connor created angle that formed 130°.What type of angle did he create?
klio [65]
D. Obtuse angle
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An obtuse angle is 130 degrees. Any angle more than 90 degrees is obtuse, any angle under 90 degrees is acute, and 90 degrees is a right angle<span>.</span>
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