A market research consultant hired by a leading softdrink co

A market research consultant hired by a leading soft-drink company wants to determine the proportion of consumers who favor its low-calorie brand over the leading low-calorie competitor in a particular geographic region. A random sample of 250 consumers from the market under investigation appears in the SoftDrink worksheet. ( I will send excel worksheet if this question is picked up, thank you.)

a) Find the appropriate value(s) to determine if more consumers in this market prefer the company’s brand over their leading competitor at 95% confidence. Can you conclude that more consumers in this market prefer the company’s brand over their leading competitor?

b) What sample size n would you have to take to estimate the proportion of all consumers in this market who prefer the company’s brand at 90% confidence with a margin of error of 0.03.

c) The data file also contains data on the gender and age group for each customer in the sample. Redo part a) (i.e., determine if you can conclude that more consumers in this market prefer the company’s brand over their leading competitor) for each of the four subgroups: female, male, Less than 20, Between 20 and 40, Between 40 and 60, and Over 60.

Solution

You can please send the excel data file to my email id meera.ind186@gmail.com