International Math Day Quiz Bee

1.What is the only even prime number?

• 2

• 3

• 4

• 5

2. Find the mean of the following set of integers.

8, 11, –6, 22, –3

• 4.6

• 6.4

• .46

• .64

3. _______________ states that there is no difference between population parameters

(such as mean,standard deviation, and so on)and the hypothesized value

• Null Hypothesis

• Alternative Hypothesis

• Parameter

• population

4. In a left-tailed test with 𝛼 = 0.01, the critical value of z is:

• -1.85

• -2.33

• -1.96

• -1.645

Given the graph of the normal curve below, what are the directional test of hypothesis and critical z value if 𝛼 = 0.01?

• two-tailed test, ±2.33

• two-tailed test, ± 1.96

• left-tailed test, -1.645

• right-tailed test, 1.645

Pi can be correctly written as a fraction?

• True

• False

What mathematical symbol was determined by Whiz Ferdinand Von Lindemann in 1882?

• $\pi$

• $\theta$

• $\infty$

• $\alpha$

Pick the choice that best completes the following sentence. If a relationship between two variables is called statistically significant, it means the investigators think the variables are:

• related in the population represented by the sample

• not related in the population represented by the sample

• related in the sample due to chance alone

• very important

The binomial theorem provides a convenient way to calculate the value of the coefficients for all the terms in any expansion involving 2 unknowns. The values of these coefficient can also be obtained from which famous mathematical figures?

• permutation tree

• Pascal’s triangles

• Pentagram

• Pythagorean triplets

An angle more than 90 degrees and less 180 degrees is called?

• Acute

• Semi-circle

• Obtuse

• Triangle