Statistical Inferences — Unit test

Question 1

The stem-and-leaf plot below shows the number of pages each student in a class read the previous evening.Which statement is true about the data set?

Revolt · Accepted Answer

The value of the first quartile is 13.

Question 2

A convenience sample differs from a voluntary sample in that

Revolt · Accepted Answer

a convenience sample is structured based on accessibility to the researcher, and a voluntary sample is based on participant interest.

Question 3

Graham uses a 10 by 10 grid to model a decreasing pattern. He cuts off a section representing a percent of the current area so that the remaining area represents the next term in the pattern, rounded to nearest whole centimeter. The area after each cut is shown on the graph.

Revolt · Accepted Answer

80%

Question 4

The mean of a set of credit scores is and . Which statement must be true about z694?

Revolt · Accepted Answer

z694 is within 1 standard deviation of the mean.

Question 5

The team mascot shoots a rolled T-shirt from a special T-shirt cannon to a section of people in the stands at a basketball game. The T-shirt starts at a height of 8 feet when it leaves the cannon and 1 second later reaches a maximum height of 24 feet before coming back down to a lucky winner.

Revolt · Accepted Answer

f(t) = –16(t – 1)2 + 24

Statistical Inferences — Unit test Answers

More from this Course

TRY EDGENUITY HACKS