Problem-1: In a survey on productivity apps, respondents write in the number of apps they

have installed in the past six months. The collected data showed some extreme high and

extreme low values. What measures of dispersion should be used here? Why?

Problem-2: A researcher is interested to evaluate the relationship between gender (Male and

Female) and Foreign Travel Intention (Low and High). For the purpose of evaluating the

relationship, data were collected from a sample of 260 respondents and a chis-square value

was found to be 158.96. Assuming 95% level of confidence can null hypothesis be rejected

here ? What is your interpretation of the research finding?

Problem-3: "If the relationship is found, it is also necessary to report the strength of association

to the marketing manager. Because null hypothesis can be rejected just because of different

assumption of confidence level" - Evaluate the statement.

Problem-4: American Ceramics, Inc. (ACI) has been developing a new form of ceramic that can

With stand high temperatures and sustained use. Because of its improved properties, the project development engineer in charge of this project thinks the new ceramic will compete as a substitute for the ceramic currently used in spark plugs. She talks to ACI's marketing research

director about conducting a survey of prospective buyers of the new ceramic material. During

their phone conversation, the research director suggests a study using about 100 companies as

a means of determining market demand. Later that day, the research director does some

background work using the Thomas Register as a source of names of companies manufacturing

spark plugs. A total of 312 companies located in the continental United States are found in the

register . How should this finding impact the final sample size of the survey?

Problem-5: The following items pertain to determining sample size when a mean is involved.

Calculate the sample size for each case.

key variable -number of car rentals per year for business trip usage ,number of sons downloaded with iTunes per month ,number of miles driven per year to commute to work, use of a 9 point scale meaning satisfaction with the brand . Standard deviation -10, 20,500, 2. Acceptable error-2,2, 50, 0.3, Confidence Level- 95%,95%,95%,95%

Problem-6: Evaluate the statement: Determining the appropriate statistical analysis to be

conducted is basically determined by the scales used and the research objectives