A. 22 Intel Dual Core processors were shock tested to see what level of static s

Question

A. 22 Intel Dual Core processors were shock tested to see what level of static shock would destroy the CPU chips. The average voltage for this sample was 46 volts with a standard deviation of 1.4 volts. Please give the LOWER VALUE for a 95% confidence interval for the true voltage level and submit the answer with 2 decimal places.

B. 210 trout in Center Hill Lake were tested for a particular genetic defect which causes the dorsal fin to be slightly bent. 14 of the trout caught were found to have this genetic defect Give the LOWER VALUE of a 97% confidence interval for the true proportion of trout that have this genetic defect. Please submit the answer with 4 decimal places.

Explanation / Answer

Mean is 46 and s is 1.4

z for 95% confidence is 1.96

thus lower limit is mean-z*s=46-1.96*1.4=43.256

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