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The we should use ANOVA instead of several t-tests to evaluate the differences in the mean of three or more groups.
<h3>What is t test?</h3>
A t- test is a measurable test that is utilized to look at the method for two gatherings. It is many times utilized in speculation testing to decide if a cycle or treatment really meaningfully affects the number of inhabitants in interest, or whether two gatherings are not quite the same as each other.
<h3>Explain ANOVA test:</h3>
The ANOVA test permits an examination of multiple gatherings simultaneously to decide if a relationship exists between them.
<h3 /><h3>According to question:</h3>
We ought to utilize ANOVA rather than a few t-tests to assess the distinctions in the mean of at least three gatherings on the grounds that without fail, we direct a t-test (between two gatherings) there is some opportunity that a Kind I blunder is being made while doing the test.
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Answer:
A
Step-by-step explanation:
Because if you simplify you get that
Answer:
It took Mr. Holloway 28 weeks to make 7 guitars.
Step-by-step explanation:
The question is incomplete, but if we are trying to find out how many weeks it would take him to make 7 guitars then the answer would be 28.
First you have to find out how many weeks it takes him to make 1 guitar.
8 ÷ 2 = 4 (4 weeks to make 1 guitar)
Then you have to multiply 4 by 7 since it takes 4 weeks to make 1 guitar.
4 * 7 = 28 (28 weeks to make 7 guitars)