Answer:
The mean of the sample distribution is $168, and standard deviation of the sample distribution is 0.98.
The shape of the sampling distribution of sample mean is aproximately normally distributed due to sample size is larger than 30 which is 1,200
Explanation:
According to the given data the mean monthly fee is $168, therefore, the mean of the sampling distribution of sample mean is:
μx=μ
=$168
The mean of the sampling distribution of sample means is $168
The standard deviation of the sampling distribution of sample mean is:
σx=σ/√n
σx=$34/√1,200
σx=0.98
The standard deviation of the sampling distribution of sample mean is 0.98
The shape of the sampling distribution of sample mean is aproximately normally distributed due to sample size is larger than 30 which is 1,200