Answer:
A. 55
Step-by-step explanation:
55 + 30 + 40 + 55 = 180
I hope this helps u! :D
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.
To know more about t-test visit:
brainly.com/question/15870238
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Answer:
A
Step-by-step explanation:
Answer:
Step-by-step explanation:
When y =0, x =-12, -2, 8
Hope this helps!
8/12 and 2/3
7/10 and 21/30
These are the ones that are equivalent. The others are not.
