Question

In a random sample of 47 dog owners enrolled in obedience training, it was determined that the mean amount of money spent per owner was $110.96 per class with a population standard deviation of $8.30. Construct and interpret a 95% confidence interval for the population mean amount spent per owner for an obedience class. A) ($108.52, $113.40); We are 95% confident that the population mean amount spent per dog owner for a single obedience class is between $108.52 and $113.40. B) ($108.52, $113.40); There is a 95% chance that a randomly selected dog owner will spend between $108.52 and $113.40 for a single obedience class. C) ($108.59, $113.33); There is a 95% chance that a randomly selected dog owner will spend between $108.59 and $113.33 for a single obedience class. D) ($108.59, $113.33); We are 95% confident that the population mean amount spent per dog owner for a single obedience class is between $109.59 and $113.33.

Answer 1

The statistical software output for this problem is:

From above output, 95% confidence interval will be:

($108.59, $113.33); We are 95% confident that the population mean amount spent per dog owner for a single obedience class is between $109.59 and $113.33.

Option D is correct.