Mathematics, 02.04.2021 16:20 GhostElite6383
Seventy-five college students are taking part in a study initiated by a large computer manufacturer. The company is designing a new type of laptop computer and has created prototypes of it with two different keyboard designs. They are also including the current design of the laptop in the experiment. Each of the students was randomly assigned to one of the three types of computers. The students are asked to spend 15 minutes on one of the computers performing several tasks (typing words, numbers, making corrections, etc.). The ease of use of the keyboard was then rated on a five-point scale by having the students fill out a short questionnaire. Which of the following was not used in this experiment?
a. control
b. replication
c. blocking
d. randomization
Answers: 1
Mathematics, 21.06.2019 14:30
What is the value of x in the figure below? if necessary, round your answer to the nearest tenth of a unit. 12 d 4 b оа. 3.1 ов. 6.9 ос. 4 od. 12
Answers: 2
Mathematics, 21.06.2019 18:20
The first-serve percentage of a tennis player in a match is normally distributed with a standard deviation of 4.3%. if a sample of 15 random matches of the player is taken, the mean first-serve percentage is found to be 26.4%. what is the margin of error of the sample mean? a. 0.086% b. 0.533% c. 1.11% d. 2.22%
Answers: 1
Mathematics, 21.06.2019 21:10
Starting at home, emily traveled uphill to the hardware store for 606060 minutes at just 666 mph. she then traveled back home along the same path downhill at a speed of 121212 mph. what is her average speed for the entire trip from home to the hardware store and back?
Answers: 1
Mathematics, 21.06.2019 22:00
Set up and solve a proportion for the following application problem. if 55 pounds of grass seed cover 404 square feet, how many pounds are needed for 7272 square feet?
Answers: 1
Seventy-five college students are taking part in a study initiated by a large computer manufacturer....
French, 14.09.2020 22:01
History, 14.09.2020 22:01
Biology, 14.09.2020 22:01
Mathematics, 14.09.2020 22:01
History, 14.09.2020 22:01
Mathematics, 14.09.2020 22:01
History, 14.09.2020 22:01
Mathematics, 14.09.2020 22:01
History, 14.09.2020 22:01
English, 14.09.2020 22:01
Mathematics, 14.09.2020 22:01
Social Studies, 14.09.2020 22:01
English, 14.09.2020 22:01
Mathematics, 14.09.2020 22:01
Mathematics, 14.09.2020 22:01
Mathematics, 14.09.2020 22:01
Mathematics, 14.09.2020 22:01
English, 14.09.2020 22:01
Social Studies, 14.09.2020 22:01
Mathematics, 14.09.2020 22:01