Statistical t-tests for means

Assignment Help Basic Statistics

Reference no: EM13108718

The publisher of Celebrity Living claims that the mean sales for personality magazines that feature people such as Angelina Jolie or Paris Hilton are 1.5 million copies per week. A sample of 10 comparable titles shows a mean weekly sales last week of 1.3 million copies with a standard deviation of 0.9 million million copies. Does this data contradict the publisher's claim? Use a 0.01 significance level. Show all work.

Reference no: EM13108718

Questions Cloud

Find whether right-hemisphere damage results : For following data, find out whether or not right-hemisphere damage results in significantly decreased performance on spatial skills task.

Estimate sustainable growth rate : Company 'x' has retention rate of 50%, sales $25000, beginning equity $50000, profit margins of 10%, asset turnover ratio of .75 and debt of $10000.

Critical value and z statistic : Use the critical values for z of 1.65 and a p level of approximately 0.10, or 10%. For each of the following values, determine if you would reject or fail to reject the null hypothesis:

Which of the regulatory mechanisms is most important : During hemorrhagic shock in which blood pressure is decreased, which of the regulatory mechanisms is most important is increasing cardiac output to help maintain blood pressure?

Statistical t-tests for means : The publisher of Celebrity Living claims that the mean sales for personality magazines that feature people such as Angelina Jolie or Paris Hilton are 1.5 million copies per week.

Distinguish between the use of lipids, carbohydrates : A cell can use many kinds of organic molecules as fuel for cellular respiration. Distinguish between the use of lipids, carbohydrates and proteins.

Why are the hospitalized patients more at risk for utis : Why are the hospitalized patients more at risk for UTIs? Which are some of the most common nosocomial infections other than UTIs and why is it hard to treat them?

Research hypothesis with mean differences : Pedro wants to know if the weight loss of his group on the chocolate-only diet is representative of weight loss in a large population of middle aged men.

Make a table comparing the corresponding chemoautothroph : Note that chemoautotroph bacteria has a an opposite counterpart in heterotroph bacteria that use anaerobic respiration ( have an electron aceptor an inorganic compound different from oxygen).

User Account

All Pages