week 7 stats quiz different

# week 7 stats quiz different - TCO 6 In the standard normal...

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TCO 6) In the standard normal distribution, the standard deviation is always 0 1 2 none of these 2. (TCO 6) The area under a normal curve with mu = 8 and sigma = 3 is 0 1 2 none of these 3. (TCO 6) If Larry gets a 70 on a physics test where the mean is 65 and the standard deviation is 5.8, where does he stand in relation to his classmates? He is in the top 10%. He is in the top 20%. He is in the bottom 20%. He is in the bottom 10%. 4. (TCO 6) In a normal distribution with mu = 25 and sigma = 3, what number corresponds to z = -3? 16 18 20 none of these 5. (TCO 6) Let’s assume you have taken 100 samples of size 64 each from a normally distributed population. Calculate the standard deviation of the sample means if the population’s variance is 49. 0.875 0.125 0.766 0.587 6. (TCO 6) The area to the left of ‘z’ is 0.0681. What z-score corresponds to this area? -1.40 1.49 -1.49 none of these 7. (TCO 6) Find P(9 < x < 22) when mu = 20 and sigma = 5. (Points: 5) 0.6554 0.6415 0.0139 0.3585

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## This note was uploaded on 01/05/2012 for the course 101 melissa jo taught by Professor Acc101 during the Spring '11 term at Aarhus Universitet.

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week 7 stats quiz different - TCO 6 In the standard normal...

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