The average number of units earned per semester by college students is suspected to be rising. A researcher at Calendula College wishes to estimate the number of units earned by students during the spring semester at Calendula. To do so, he randomly selects 100 student transcripts and records the number of units each student earned in the spring term. Identify the variable of interest to the researcher.

the number of units earned by Calendula College students during the spring term

Explanation:

The variable of interest in a research, is the variable that is measured in quantity, which changes. In the case of the study stated above, the variable of interest to the researcher that is measured is the number of units earned by Calendula College students during the spring term. The change which reflects in the rise of the average number of units per semester by students, is what the researcher is keen on studying, hence, his quest to estimate the number of units the students earned during the spring semester.

explanation:

a gas is not used in hydraulic machines as the fluid because gas is easily compressible and so if a gas is used, the energy would mostly go into compressing a gas. therefore a liquid is used in hydraulic machines as the fluid.

answer; /// i believe the correct answer is first in, first out(fifo); //