True or False: A professor computed the sample average exam score of 20 students and used it to estimate the average exam score of the 1,500 students taking the exam. This is an example of inferential statistics.
Indicate whether the statement is true or false
Q. 2True or False: Managers need an understanding of statistics to be able to present and describe information accurately, draw conclusions about large populations based on small samples, improve processes, and make reliable forecasts.
Indicate whether the statement is true or false
Q. 3True or False: Problems may arise when statistically unsophisticated users who do not understand the assumptions behind the statistical procedures or their limitations are misled by results obtained from computer software.
Indicate whether the statement is true or false
Q. 4Most analysts focus on the cost of tuition as the way to measure the cost of a college education. But incidentals, such as textbook costs, are rarely considered. A researcher at Drummand University wishes to estimate the textbook costs of first-year students at Drummand. To do so, she monitored the textbook cost of 250 first-year students and found that their average textbook cost was 600 per semester. Identify the variable of interest to the researcher.
A) The year in school of Drummand University students
B) The cost of incidental expenses of Drummand University students
C) The textbook cost of first-year Drummand University students
D) The age of Drummand University students
Q. 5A study is under way in Yosemite National Forest to determine the adult height of American pine trees. Specifically, the study is attempting to determine what factors aid a tree in reaching heights greater than 60 feet tall. It is estimated that the forest contains 25,000 adult American pines. The study involves collecting heights from 250 randomly selected adult American pine trees and analyzing the results. Identify the variable of interest in the study.
A) The age of an American pine tree in Yosemite National Forest
B) The number of American pine trees in Yosemite National Forest
C) The height of an American pine tree in Yosemite National Forest
D) The species of trees in Yosemite National Forest
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