Assume that when adults with smartphones are randomly selected, 49% use them in meetings or classes. If 9 adult smartphone use
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Answer:
The answer is "At the 0,10 level, there should be enough proof that the percentage is below 49%"
Step-by-step explanation:
Null and alternative hypothesis:
Significance level:
It is decided that the null hypothesis at the defined meaning level is rejected.
The vertex is (-4,-3)
The axis of symmetry is x=-4
and the transformations are:
