In 2011,computers of Brand a Controlled 25% of the Market,Brand

question 91

Essay

In 2011,computers of Brand A controlled 25% of the market,Brand B 20%,Brand C 10%,and brand D 45%.In 2015,sample data was collected from many randomly selected stores throughout the country.Of the 1,200 computers sold,280 were Brand A,270 were Brand B,90 were Brand C,and 560 were Brand D.Has the market changed since 2011? Test at the 1% significance level.

---

Definitions:

Axillary

Pertaining to the armpit area.

Radial

Pertaining to a radius or radial direction, often referring to anatomy, such as radial arteries or radial nerves.

Carpal Tunnel

A narrow passageway in the wrist bounded by bones and a ligament, which can be compressed in carpal tunnel syndrome, affecting nerve function.

Median

A statistical measure representing the middle value in a data set, where half the numbers are greater and half are less.