Q. The following data is a systematic survey of the amount paid by a student at a bookstore for a month. (k = 200, Z0.02...

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Q. The following data is a systematic survey of the amount paid by a student at a bookstore for a month. (k = 200, Z0.02...

Q. The following data is a systematic survey of the amount paid by a student at a bookstore for a month. (k = 200, Z0.025 = 2)

Data set : 30 20 10 62 28 31 40 29 17 51 29 21 13 15 23 32 14 29 48 50 29 25 16 63 21 20 23 12 29 38 ($)

1. Find the average you paid for the book.

2. Find the limit of the estimation error for the total estimation of all students.

3. Use this data to determine a sufficient sample size to ensure that the limit of error for the mean is less than 5.

4.I would like to estimate the percentage of students who pay more than $50 for one month's book value. Find a 95% confidence interval.

math Statistics-And-Probability

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Answer 1

Answer #1

30,0,06,83,YO,21, 19131, , 2,13,15,23,32 dala Clven 14,29,25,1663, 귀 20123)hin,3% Avaage Sum n 868 30 = B133 SE= estimalion e 15 Coniden n 28 1335-078 (23-8872,337)

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Q. The following data is a systematic survey of the amount paid by a student at a bookstore for a month. (k = 200, Z0.02...

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