A professor planned to give an examination in a large class on the Monday before Thanksgiving vacation. Some students asked whether he could

Question

A professor planned to give an examination in a large class on the Monday before Thanksgiving vacation. Some students asked whether he could change the date because so many of their classmates had at least one other exam on that date. They speculated that at least 40% of the class had this problem. The professor agreed to poll the class, and if there was convincing evidence that the proportion with at least one other exam on that date was greater than .40, he would change the date. Of the 250 students in the class, 109 reported that they had another exam on that date. What proportion of the class reported that they had another exam on the date?

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Caroline 1 month 2021-10-26T12:17:40+00:00 1 Answer 0 views 0

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    2021-10-26T12:19:18+00:00

    Answer:

    0.436

    Step-by-step explanation:

    Given that a professor planned to give an examination in a large class on the Monday before Thanksgiving vacation

    Some students asked whether he could change the date because so many of their classmates had at least one other exam on that date.

    They speculated that at least 40% of the class had this problem.

    The professor agreed to poll the class, and if there was convincing evidence that the proportion with at least one other exam on that date was greater than .40, he would change the date.

    No of students in total = 250

    Reported they had another exam = 109

    proportion of the class reported that they had another exam on the date

    = \frac{109}{250} =0.436

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45:7+7-4:2-5:5*4+35:2 =? ( )