Q1) A multiple choice quiz consists of six questions, each with four possible answers. If student guesses at answer to each question, then mean number of correct answers is

a) 6.00  

b) 1.50  

c) 4.00  

d) 10.00

Q2) Which of the given properties doesn't apply to theoretical normal distribution?

i) The normal distribution is bell-shaped.

ii) The mean, median, and mode are equal.

iii) The normal distribution is bimodal.

iv) The curve never touches the x-axis.

Q3) One normal curve has mean 23 and standard deviation 1, second normal curve has mean 5 and standard deviation 10. Curve that is more dispersed, or spread out, is

i) The first normal curve

ii) The second normal curve

iii) They are equally spread out

iv) There is not enough information to answer the question