Michaela King-Stat Quiz #15homework assginment! stat py211 homework homework homework homework homework homework homewrok homewrok homework homework homework home PDF

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homework assginment! stat py211 homework homework homework
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Introduction to Statistics

Name: _Michaela King__

Quiz: Assignment #15 (Random Variables)

Statistics Quiz #15

The table above describes the distribution of IQ with a mean of 100 and a standard deviation of 15 Compute the following probabilities 1. P(IQ < 85) = 15.86 or .1586

2. P(70 < IQ < 115) = 81.85 or .8185

3. P(IQ > 130 or IQ  55) = .027 + .013 = .04 Consider the following graph that represents a uniform distribution and solve the probability problems below

4. P(X > .45) = .55

5. P(X = .65) = a single value has no probability, therefore, 0.

6. P(X > .85 or X  .30) =

.15 + .30 = .45

Discreet or continuous random variable: Identify each as “discrete” or “continuous” 7. height of humans

discreet

continuous

8. Social media sites (e.g. Facebook, Twitter, Snap Chat) you access discreet

9. Are you or are you not taller than 6’ 0” (183 cm)

discreet

continuous

continuous...