The amount people who pay for electric service varies quite a bit, but the mean monthly fee is $168 and the standard deviation is $34. The distribution is not Normal. Many people pay about $90 in rural areas of the country and about $150 in urban areas of the country, but some pay much more. A sample survey is designed to ask a simple random sample of 1,200 people how much they pay for electric services.

I need the mean and standard deviation of the sample distribution and i need to know the shape of the sampling distribution

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

Step-by-step 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

$650 per month plus utilities

step-by-step explanation:

just based on the info you gave, it would seem more cost effective to rent at $650 per month plus utilities.   if utilities are, in fact, $150 per month, your monthly living costs would be $800 as opposed to the other option of $825.

easy its decreasing

step-by-step explanation:

because its top point is at the to of the graph on the left side (atleast from the veiw i see it) now if that top point wast in the lower part of the graph it would be increasing hope this have a nice day