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Mathematics, 08.02.2021 08:00 shayneseaton

A cheerleading squad received a mean rating (out of 100 possible points) of 71 ± 11 ( ± ) in competitions over the previous three seasons. The same cheerleading squad performed in 25 local competitions this season with a mean rating equal to 74 in competitions. Suppose we conduct a one-independent sample z-test to determine whether mean ratings increased this season (compared to the previous three seasons) at a 0.05 level of significance

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A cheerleading squad received a mean rating (out of 100 possible points) of 71 ± 11 ( ± ) in competi...
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