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Nuetrik [128]
3 years ago
9

Can someone help me find the error?

Mathematics
1 answer:
BlackZzzverrR [31]3 years ago
6 0
(-2)^2 actually equals 4
-2×-2=positive 4. :)
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The correct option is C. either a t test or an analysis of variance can be performed.

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Consider the provided information.

  • The t-test, is used for whether the means of two groups are equal or not. The assumption for the test is that both groups are sampled from normal distributions with equal variances.
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