Question

12 raw diamonds of 3 carets each are chosen for a demonstration of a new robotic diamond cutter. This robot has sensors that can detect the planes of the diamond where it is to be cut and can supposedly cut a larger caret diamond than a human diamond cutter can. The 12 diamonds cut for this demonstration had these carets: 1.4, 1.1, 1.5, 1.4, 1.4, 1.0, 1.0, 1.1, 1.1, 1.5, 1.2, 1.1
Please give the UPPER VALUE for a 90% confidence interval for the average caret diamond cut by the robot when starting with a 3 caret raw diamond. Please submit the answer with 2 decimal places.

Answer 1

	Values ( X )
	1.4	0.0278
	1.1	0.0178
	1.5	0.0711
	1.4	0.0278
	1.4	0.0278
	1	0.0544
	1	0.0544
	1.1	0.0178
	1.1	0.0178
	1.5	0.0711
	1.2	0.0011
	1.1	0.0178
Total	14.8	0.4067

Mean

Standard deviation

Confidence Interval



Upper Limit =
Upper Limit = 1.31
90% Upper value of confidence interval is 1.31