Business Statistics

Chapter 9 | Statistical Inference: Estimation for Single Populations 301

98.05 – 1.2320  m  .0  .0

96.81  m  .

The quality control inspector is 90% condent that the population mean will lie

between 96.81 to 99.28 hours. Figure 9.23 is the Minitab output exhibiting com-

putation of 90% condence interval for Example 9.12.

Example 9.13

Figure 9.24

Minitab output exhibiting

computation of 95%

confidence interval for

Example 9.13

The organized sector has a 70% market share in the storage batteries seg-

ment in India.

4

Suppose a researcher wants to check this market share. For

this purpose, the researcher has taken a random sample ...