a) The following grades were achieved in a GCSE mathematics exam by a sample of 6 students: 92 80 69 50 65 49 (i) Calculate the sample mean grade and the standard deviation. (ii) Construct a 95% confidence interval for the population mean grade. (iii) State what assumptions have to be made in order to be able to construct the confidence interval in part (ii).
a) The following grades were achieved in a GCSE mathematics exam by a sample of 6 students: 92 80 69 50 65 49 (i) Calculate the sample mean grade and the standard deviation. (ii) Construct a 95% confidence interval for the population mean grade. (iii) State what assumptions have to be made in order to be able to construct the confidence interval in part (ii).
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.4: Distributions Of Data
Problem 19PFA
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a) The following grades were achieved in a GCSE mathematics exam by a sample of 6 students: 92 80 69 50 65 49
(i) Calculate the sample
(ii) Construct a 95% confidence interval for the population mean grade.
(iii) State what assumptions have to be made in order to be able to construct the confidence interval in part (ii).
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