It is known that one of the very famous supermarket chains invests in residential areas if it can be proven that the population proportion of homeowners exceeds 90%. A sample of 70 families revealed...

Extracted text: It is known that one of the very famous supermarket chains invests in residential areas if it can be proven that the population proportion of homeowners exceeds 90%. A sample of 70 families revealed that 62 families would be buying a new house from one of the newly developed parts of the city over the next year. (use 3 digits after decimal point) a. Estimate the value of the population proportion. b. 95% confidence interval for the population proportion is [ to