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Answer: Independent Samples t-test
Explanation:
The independent samples t test, also called an unpaired samples t test, is used to compare two sets of data from samples that are independent.
This experiment compares two sets of data, the grades from the group of learners that took the course in the old format and the group that took it in the new format, to see if the grades differ depending on the format of the course.
The one sample t test wouldn´t be correct because it´s used to compare one result with an expected value. And the paired t test wouldn´t be correct because it´s used to compare related observations, such as test scores from a test taken at different hours of the day.
a proportionate saving in costs
Answer:
Racism
Explanation:
racism is a type of discrimination against someone's ethnicity, physical features, background or race.
In the earlier part of the twentieth century, food spoilage was more of a concern. This is because there were fewer preservatives and less refrigeration. Antibiotics can also be a correct answer as well. Nowadays, food is filled with artificial flavors, colors and preservatives which lead to a longer shelf life.
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