Why is it permissible to use the normal curve percentages

Reference no: EM13108155

You may need to find an apartment to rent upon graduation. The Internet is a valuable source of data to aid you in your search. From neighborhood safety to available transportation to housing costs, recent data can steer you in the right direction. On a Web site, San Mateo County in California published extensive descriptive statistics from its 1998 Quality of Life Survey. The county reported that the mean house payment (mortgage or rent) was $1225.15, with a standard deviation of $777.50. It also reported that the mean cost of an apartment rental, rather than a house rental or a mortgage, was $868.86. For this exercise, treat the overall mean housing payment as a parameter, and treat the mean apartment rental cost as a statistic based on a sample of 100. a. Using symbolic notation and formulas (where appropriate), determine the mean and the standard error for the distribution of means for the overall housing payment data. b. Using symbolic notation and the formula, calculate the z statistic for the cost of an apartment rental. c. Why is it likely that the z statistic is so large? (Hint: Is this distribution likely to be normal? Explain.) d. Why is it permissible to use the normal curve percentages associated with the z distribution even though the data are not likely normally distributed?

Reference no: EM13108155

Questions Cloud

Analyze the workplace culture : Analyze the workplace culture to determine its impact on the ability of Congress to do its job well. Provide specific examples to support your response.

Describe individual factors that influence a person response : Describe individual factors that influence a person's response.

Degrees of freedom and conditional expectations : Show that if Z1 and Z2 are independent standard normal random variables, then for all ρ (correlation), Z 1 and ρZ 1 +sqrt(1-ρ 2 )*Z 2 are standard normal with correlation ρ.

Compare and contrast the theories of scientific management : Compare and contrast the theories of scientific management with that of the human relations management approach.

Why is it permissible to use the normal curve percentages : You may need to find an apartment to rent upon graduation. The Internet is a valuable source of data to aid you in your search. From neighborhood safety to available transportation to housing costs, recent data can steer you in the right direction..

What was schmidt measurements for independent variables : what was schmidt's (1994), measurements for independent variables and dependent variables.

Is chance variation a good defense : There is pretty good chance average number of days absent would be 12 or more. That is what occurred to us - chance variation." Is this good defense? Justify the answer.

Calculating the optimal quantity : A large supplier of electronic components has decided to control the inventory of a certain item by a periodic review, order up to R policy. The mean demand rate for this item is 500 units per year.

What are the strengths and weaknesses of your design : You might theorize that how people cope with conflict is influenced by their physical state. You generate the hypothesis that hungry people will be more likely to engage in conflict than people who aren't hungry. Describe a repeated measures exper..

User Account

All Pages