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KATRIN_1 [288]
3 years ago
5

iq scores are measured with a test designed so that the mean is 83 and the standard deviation is 20. consider the group iq score

s that are unusual. what are the z scores that separate the unusual iq scored from those that are unusual? what are the iq scores that separate the unusual iq scores from those that are unusual? consider a value to be unusual if its z score is less than -2 or greater than 2.)
Mathematics
1 answer:
dsp733 years ago
5 0
Oh my sorry didn’t know the answer
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zheka24 [161]

Answer:

Probability = 0.12025

Step-by-step explanation:

P (Am) = 1/50 = 0.02       {Magazine ad}

P (At) = 1/8 = 0.125         {Television ad}

P (Am ∩ At ) = 1/100 = 0.01      {Both ads}

P (Am U At) = P (Am) + P (At) - P (Am ∩ At )

= 0.02 + 0.125 - 0.01

P (Am U At)  = 0.135       {Person sees either ad}

P (Am' ∩ At') = 1 - P (Am U At)

P (Am' ∩ At')  = 1 - 0.135 = 0.865      {Person sees none ad}

Prob (Purchase) = Prob (Purchase with ad) + Prob (purchase without ad)

P (P/ A) = 1/4 = 0.25 , P (P / A') = 1/10 = 0.1

P (P) = (0.25) (0.135) + (0.1) (0.865)

= 0.03375 + 0.0865

0.12025

7 0
2 years ago
WILL MARK BRAINLIEST
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Answer:

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Step-by-step explanation:

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3 years ago
in a game the player wins if he rolls a 6 on a number cube if the number cube is rolled 18 times then what is a reasonable predi
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Answer:

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Step-by-step explanation:

6 0
3 years ago
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anastassius [24]

Answer:

The y-intercept is at y = 10.

Step-by-step explanation:

It will be between y = 14 and y = 7 because the corresponding x values are -2 and 1.

An increase of 3 units of x  gives a decrease of 6 units of y fro the above values.

Then an increase of 1 ( 1 to 2) in x gives decrease in y of 2 (8 to 6). The other values show the same pattern.

So very unit increase in x,  the y values change by -2.

So  from x = -2 to 0 is +2 units for x and this will be -4 units for y  so the y-intercept ( when x = 0) will be at y = 14-4 = 10

y-intercept  is (0,10).


7 0
3 years ago
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