Question

A quality-conscious disk manufacturer wishes to know the fraction of disks his company makes which are defective. Step 1 of 2 : Suppose a sample of 1475 floppy disks is drawn. Of these disks, 147 were defective. Using the data, estimate the proportion of disks which are defective. Enter your answer as a fraction or a decimal number rounded to three decimal places.

Answer 1

Answer: Proportion of defective disk based on the given information is 0.10

Explanation:

Given the following ;

Sample size(s) = 1475

The sample size refers to the number of floppy disk drawn from the entire population of floppy disks available

Number of Defective(x) = 147

Proportion of defective disk can be calculated using;

Proportion(p) = Number of defective disk(x) ÷ sample size(s)

p = 147 ÷ 1475

p = 0.09966

p = 0.09966

p = 0.10