Reference no: EM1315759

Q1) Total area under normal distribution curve is about 0.99 but can never be equal to 1.0

Q2) Area under normal distribution curve which lies within 3 standard deviation (σ) of mean (µ) is approximately 95%.

Q3) When finding area under curve between two z values, procedure is to subtract two z values and look up corresponding area in standard normal table

Q4) The area under curve is always positive even if z value is negative.

Q5) Statistics is science of conducting studies to

a) Solve a system of equations.

b) Hypothesize, experiment, and form conclusions.

c) collect, organize, summarize, analyze, and outline conclusions from data.

d) Monitor, study, and report on a subject.

Q6) If weather centre monitors and computes average number of tornadoes which pass through Topeka, Kansas each year, what kind of variable would they be investigating?

a) random variable

b) Controlled variable

c) Isolated variable

d) Weather variable