Question

(6 points) Parameters and statistics. Identify which value represents the sample mean and which value represents the claimed population mean. 1. A recent article in a college newspaper stated that college students get an average of 5.5 hours of sleep each night. A student who was skeptical about this value decided to conduct a survey by randomly sampling 25 students. On average, the sampled students slept 6.25 hours per night. a. The sample mean is: b. The claimed population mean is: 2 American households spent an average of about $52 in 2007 on Halloween merchandise such as costumes, decorations, and candy. To see if this number had changed, researchers conducted a new survey in 2008 before industry numbers were reported. The survey included 1,500 households and found that the average Halloween spending was $58 per household a. The sample mean is: b. The claimed population mean is: 3. The average GPA of students in 2001 at a private university was a 3.37. A survey on a sample of 203 students from this university yielded an average GPA of 3.59 in the spring semester of 2012. a. The sample mean is b. The claimed population mean is:

Answer 1