1. Twenty students participated in a psychology experiment which measured their heart
rates in two different situations.

a. What are the appropriate measures of center and variability to use with the
data? Explain your reasoning.

b. Which situation shows a greater typical heart rate?

c. Which situation shows greater variability?

2.
a. Invent two situations that you think would result in distributions with similar
measures of variability. Explain your reasoning.

b. Invent two situations that you think would result in distributions with different
measures of variability. Explain your reasoning.

square pyramid

step-by-step explanation:

square prism looks like nothing like that

triangular prism has a rectangular base instead of a square base

tetrahedron has a triangular base

answer:   28.56 feet (approx)

step-by-step explanation:

since, triangle abc has measure of angle c equal to 55 degrees, measure of angle abc equal to 90 degrees, and length of bc equal to 20 feet.

we have to find out the measurement of segment ab.

therefore, tan 55° =

but bc = 20 feet.

⇒ tan 55 ° =  

⇒ ab = 20 × tan 55 °

⇒ ab = 20 × 1.42814800674

⇒ ab = 28.5629601348   ≈ 28.56 feet

it is a secret for it not to be compromised sorry

step-by-step explanation: