Dmart wants to know the customer based on their purchases and whether the customers had only...

 

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Dmart wants to know the customer based on their purchases and whether the customers had only one car, one bike or more than one car and/or bike. The results from a sample of 100 customers are as follows: sample mean of purchases is Rs.1200, sample standard deviation of purchases is Rs.250,48 customers have car, 30 customers have bike and twenty two customers have more than one car and/or bike. [2] (a) Construct a 95% confidence interval estimate for the population mean purchases made at Dmart (b) Construct a 90% confidence interval estimate for the population proportion of customers who only had one bike Dmart wants to know the customer based on their purchases and whether the customers had only one car, one bike or more than one car and/or bike. The results from a sample of 100 customers are as follows: sample mean of purchases is Rs.1200, sample standard deviation of purchases is Rs.250,48 customers have car, 30 customers have bike and twenty two customers have more than one car and/or bike. [2] (a) Construct a 95% confidence interval estimate for the population mean purchases made at Dmart (b) Construct a 90% confidence interval estimate for the population proportion of customers who only had one bike

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a To construct a 95 confidence interval estimate for the population mean purchases made at Dmart you ... View the full answer