Statistics HW Help?

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  • 4 weeks ago

    QUESTION 7

    For which dataset we can't plot a density curve?

    Group of answer choices

    dataset of 1000 people, for each person we have data on the number of minutes they spent in the library

    We have survey data on 1000 customers, each stating their level of satisfaction with the bank service from strongly dissatisfied to strongly satisfied

    We have data on the temperature of College Park for every day since the past 10 years

    QUESTION 8

    A startup company wants to filter applicants based on several criteria, one of them being GRE quantitative score. Suppose GRE scores are well-approximated by a Gaussian distribution, with mean 150 and standard deviation 8.

    The manager has asked the employee in charge of reviewing the applications to only keep applications with GRE score above than 166.

    In the process, the employee finds some applications which have submitted GMAT score instead of GRE and asks the manager what to do with them. The manager, in haste, says "just select those with equivalently high scores".

     

    GMAT scores are well-approximated by a Normal distribution with mean 550 and standard deviation 110.

     

    Which threshold should the employee consider for GMAT scores? That is, applicants with GMAT score above what value should be kept?

    Group of answer choices

    650

    770

    685

    610

    725

    QUESTION 9

    In a standard Normal distribution, what percentage of datapoints have value less than 1.96?

    Group of answer choices

    68

    34

    95

    97.5

    2.5

    5

    16

  • 4 weeks ago

    too small. Can't read.

    Post each question separately and type them all out vs. trying to post images.

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