A sample of 100 fuses from a very large shipment is found to have 10 that are defective.Based on this information,which of the following will you construct to learn about the proportion of fuses that are defective?
A)Confidence interval estimate for the total using the Student's t distribution.
B)Confidence interval estimate for the mean using the Student's t distribution.
C)Confidence interval estimate for the proportion using the standard normal distribution.
D)Confidence interval estimate for the difference between two means using the standard normal distribution.

Question

Quizplus · Accepted Answer

In this scenario, we are interested in estimating the proportion of defective fuses in the entire shipment. As we only have one sample, and the variable of interest is binary (defective or not defective), the appropriate method to use is a confidence interval estimate for the proportion using the standard normal distribution. The other choices are not relevant in this scenario.

A Sample of 100 Fuses from a Very Large Shipment