Students in a large statistics class were randomly divided into two
groups. the first group to...
Mathematics, 23.10.2019 21:30 coleman310
Students in a large statistics class were randomly divided into two
groups. the first group took the midterm exam with soft music
playing in the background while the second group took the exam
with no music playing. the exam scores of the two groups were
then compared.
this experiment was not blind because:
-
students were allowed to keep their eyes open while
taking the exam.
-
the exam was too long.
-
the students knew whether or not music was playing while
they were taking the exam.
-
some of the students did not study for the exam.
-
students were randomized into the two groups.
Answers: 3
Mathematics, 21.06.2019 15:30
Abike shop sells you a bicycle for $63 and a helmet for $21. the total cost is 150% of what the shop spent originally. how much did the shop spend originally? how much profit did the bike shop earn by selling the bicycle and helmet to you ?
Answers: 1
Mathematics, 21.06.2019 16:00
Select all the correct answers. what is 221,000,000,000,000,000,000 expressed in scientific notation?
Answers: 2
Mathematics, 22.06.2019 00:00
Me with this assignment ! i only partially understand, so explain. also it's a work sample. at the championship bike race, steve and paula were fighting for first place. steve was 175 feet ahead of paula and had only 300 feet left to go. he was very tired and was going only 9 feet per second. paula was desperate to catch up and was going 15 feet per second. who won the bike race and by how far did she/he win?
Answers: 1
Mathematics, 22.06.2019 00:30
1. according to the internal revenue service, the mean tax refund for the year 2007 was $2,708. assume the standard deviation is $650 and that the amounts refunded follow a normal probability distribution. a. what percent of the refunds are more than $3,000? b. what percent of the refunds are more than $3,000 but less than $4,000? c. what percent of the refunds are less than $2,000?
Answers: 2
Mathematics, 15.11.2020 21:50
Mathematics, 15.11.2020 21:50
Mathematics, 15.11.2020 21:50
Chemistry, 15.11.2020 21:50
Mathematics, 15.11.2020 21:50
History, 15.11.2020 21:50
Physics, 15.11.2020 21:50
English, 15.11.2020 21:50
Mathematics, 15.11.2020 21:50
Mathematics, 15.11.2020 21:50
Mathematics, 15.11.2020 21:50
Mathematics, 15.11.2020 21:50
English, 15.11.2020 21:50