Stat 160 Prequiz over Section 5.1, 5.2, and 5.3



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1. Let X have a uniform probability model. X can take on any values between 4 and 5. What is the probability that X is between 4.8 and 5?

4.8
0
8
.2
2. I take a sample of the heights of 50 students at WMU and compute the sample average to be 67 inches; hence, the true mean height for students at WMU is 67.

True.
False.
3.The probability curve (normal distribution) is a bell shaped curve centered at its mean (mu).
True.
False.
4. Say the height of all people is normally distributed (72,16) [mean=72, variance =16]. The probability curve (distribution) of height is symmetric about 72.
True.
False.