Sample of children with non-organic disorders

Reference no: EM131065535

A journal article reported the following data on the amount of dextroamphetamine excreted by a sample of childeren having organically related and a sample of children with non-organic disorders.

Organic 17.53 20.60 17.62 28.93 27.10
Non-organic 15.59 14.76 13.32 12.45 12.79

( observations refer to the recovery of the drug 7 hours after its adminstration )
Test Ho: u1= u2 where u1 and u2 refer to the true mean percentages of recovery for the two conditions. Use alpha = 0.05

2. A random sample of 5726 telephone numbers taken from a certain city yielded 1105 numbers that were unlisted. A researcher's claim is that the true proportion of phone numbers in this city is larger that 15%. A ) Test this claim at the 0.05 level of significance.

For the last two problems assume that data set 1 was randomly drawn from population with normal distributions with unknown mean and variance.

Data set 1
53.0063 45.9649 54.0093 54.1530 50.8206 47.7846 52.7969
48.2792 52.8834 50.5803 52.1017 46.2915

B) for data set 1, test the hypothesis Ho: u = 55, versus H1 : u not equal to 55

C) for the set 1, find a 95% confidence interval on square sigma
To:Cecilia Frank (Manager)

Reference no: EM131065535

Questions Cloud

What is the fee if the project is completed 4 days : What is the fee if the project is completed 4 days after the deadline

Find the angle between the two forces : Find the angle between the two forces. Round to the nearest integer.

Find the range variance and standard deviation : A student earned grades of 92, 79, 93, and 74 on her four regular tests. She earned a grade of 79 on the final exam and 88 on her class projects. Find the range, variance, and standard deviation for each of the two samples, then compare the two set..

Write the boolean expression for the given logic circuits : Write the Boolean expression for each of the logic circuits below. Which Boolean law is used to transform each of the following equations? Draw a logic circuit for circuit represented by each expression:

Sample of children with non-organic disorders : For the last two problems assume that data set 1 was randomly drawn from population with normal distributions with unknown mean and variance.

Write an essay about surgically implanted electronic devices : Write an essay about Surgically Implanted Electronic Devices and Electronic Applications in the Automobile Industry. Present or Contemporary Usage, Advantages and Disadvantages and Future Concerns and Issues.

Which of the pearson correlations shows the strength : which of the folling pearson correlations shows the greatest strength

Derive and graph home import demand schedule : Suppose that Foreign had been a much larger country, with domestic demand D* = 800 - 200P and S* = 400 + 200P. Recalculate the free trade equilibrium and the effects of a 0.5 specific tariff by Home. Relate the difference in results to the discuss..

Determine the standardized test statistic t : determine the standardized test statistic t necessary to test the claim ? = 0 . Round answers to three decimal places

User Account

All Pages