A sample of 50 students was taken randomly from a university, and it was found that these students spent an average of Rs. 1400 on books throughout the year. The standard deviation of spending is Rs. 130. Which of the following is the 95% Confidence Interval for the amount spent on books?

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Mathematics · Statistics

Verified Solution4 OptionsUpdated: October 2026👁️1 View

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Rs. 1400 ± Rs. 36.03 or [1363.97, 1436.03]

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Answer 1

Rs. 1400 ± Rs. 36.03 or [1363.97, 1436.03]

Answer 2

Rs. 1400 ± Rs. 18.38 or [1381.62, 1418.38]

Answer 3

Rs. 1400 ± Rs. 7.07 or [1392.93, 1407.07]

Answer 4

Rs. 1400 ± Rs. 130 or [1270, 1530]

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