Author Question: An experiment in which the experimental unit (or subject) does not know which treatment he or she is ... (Read 55 times)

ap345 · **on:** Jul 24, 2018

An experiment in which the experimental unit (or subject) does not know which treatment he or she is receiving is called a ________________ .

A) single-blind experiment B) double-blind experiment
C) randomized block design D) matched-pairs design

Question 2

The length of time it takes college students to find a parking spot in the library parking lot follows a normal distribution with a mean of 4.5 minutes and a standard deviation of 1 minute.

Find the cut-off time which
75.8 of the college students exceed when trying to find a parking spot in the library parking lot.
A) 5.2 min B) 5.0 min C) 4.8 min D) 5.3 min