Social Studies, 30.01.2020 00:02 Tetto
Eduardo's mother just bought a new vacuum cleaner that she loves. eduardo wants to know if it really cleans better than the old one. he gets a few identical carpet samples and works an equal amount of sand and dirt into each one.
then he gets a panel of ten people to rate how well each vacuum cleans.
which of the following experimental setups will be the most objective and have the least bias?
a. eduardo leaves 1/3 of the samples dirty. he divides the other samples into two groups. he cleans each group with a different vacuum. he puts the samples in a random order, then asks the panelists to rate how clean each sample is.
b. the panelists watch eduardo use each vacuum to clean a carpet sample, then they rate how clean each sample is.
c. each panelist cleans one carpet sample with each vacuum, then rates how clean each sample is.
d. eduardo leaves 1/3 of the samples dirty. he divides the other samples into two groups. he cleans each group with a different vacuum, then he asks the panelists to rate how clean each group is.
Answers: 1
Social Studies, 21.06.2019 23:30, zalliagessnerp5fuj9
For each example, identify the most appropriate ctso. ann wants to be a manager who directs the work of others: hosadecatsanational ffa teresa wants to have a career that emphasizes mathematics: fcclapastsanyfea justin wants to have a career in nursing: bpahosafbla-pblfea howard wants to have a career focused on the education of others: feafcclanyfeapas
Answers: 3
Social Studies, 22.06.2019 19:30, fernandoluvsmom
The federal crescent is shaped like what letter
Answers: 1
Eduardo's mother just bought a new vacuum cleaner that she loves. eduardo wants to know if it really...
Chemistry, 13.07.2019 20:30
Mathematics, 13.07.2019 20:30
History, 13.07.2019 20:30
Mathematics, 13.07.2019 20:30
History, 13.07.2019 20:30
English, 13.07.2019 20:30