PLEASE HELP QUICKLY!!! How are average IQs related to normal distribution

Mathematics

1 answer:

katen-ka-za [31]3 years ago

6 0

Answer:

Read Explanation

Step-by-step explanation:

A standard devation of 15 means 68% of the norm group has scored between 85 (100 – 15) and 115 (100 + 15). In other words, 68% of the norm group has a score within one standard deviation of the average (100). Also, 95% of the norm group has an IQ score within two standard deviations of the average.

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A student stands 20 m away from the foot

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Answer:

Height of tree is $\approx$ 15 m.

Step-by-step explanation:

Given that student is 20 m away from the foot of tree.

and table is 1.5 m above the ground.

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Please refer to the attached image. The given situation can be mapped to a right angled triangle as shown in the image.

AB = CP = 20 m

CA = PB = 1.5 m

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To find TB = ?

we can use trigonometric function tangent to find TP in right angled $\triangle TPC$

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