Discuss the below:
Q1) 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%.
Q2. 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
Q3. Find P(11 < x < 16) when mu = 15 and sigma = 3.
0.6293
0.3707
0.0918
0.5375
Q4. Interpret a 90% confidence interval of (4.355, 4.445) for a population mean.
Q5. ) In the standard normal distribution, the variance is always
0
1
2
none of these
Q6. The area under a normal curve with mu = 15 and sigma = 2 is
0
1
2
none of these