## Practice Set 3

Don't use plagiarized sources. Get Your Custom Essay on
Our work is always; • #Top-Quality • #Plagiarism-free

1.   Let x be a continuous random variable. What is the probability that x assumes a single value, such as a (use numerical value)?

2. Thefollowingarethethreemaincharacteristicsofanormaldistribution.

A.     Thetotalareaunderanormalcurveequals _____.

C.    Fill in the blank. Thetailsofanormaldistributioncurveextendindefinitelyinbothdirectionswithouttouchingorcrossingthehorizontalaxis.Althoughanormalcurvenevermeetsthe________axis,beyondthe pointsrepresentedby µ – 3σ   to µ+ 3σ itbecomessoclosetothisaxisthattheareaunderthecurve beyondthesepointsinbothdirectionsisveryclosetozero.

3. For the standard normal distribution, find the area within one standard deviation of the

mean that is, the area between μ − σ and μ + σ. Round to four decimal places.

4. Find the area under the standard normal curve. Round to four decimal places.

a)     between z = 0 and z = 1.95

b)    between z = 0 and z = −2.05

c)     between z = 1.15 and z = 2.37

d)    from z = −1.53 to z = −2.88

e)     from z = −1.67 to z = 2.24

5.     Theprobabilitydistributionofthepopulationdataiscalledthe (1) ________.Table7.2inthe textprovidesanexampleofit.Theprobabilitydistributionofasamplestatisticiscalledits (2) _________.Table7.5inthetextprovidesanexampleit.

A.    Probability distribution

B.    Population distribution

C.    Normal distribution

D.    Sampling distribution

7. Consider the following population of 10 numbers. 20 25 13 19 9 15 11 7 17 30

a)     Find the population mean. Round to two decimal places.

b)    Rich selected one sample of nine numbers from this population. The sample included the numbers 20, 25, 13, 9, 15, 11, 7, 17, and 30. Calculate sampling error for this sample. Round to decimal places.

8. Fill in the blank. TheFdistributionis________andskewedtotheright.TheFdistributionhastwo numbersofdegreesoffreedom:dfforthenumeratoranddfforthedenominator.TheunitsofanFdistribution,denotedbyF,arenonnegative.

9. Find the critical value of F for the following. Round to two decimal places.

a)     df = (3, 3) and area in the right tail = .05

b)    df = (3, 10) and area in the right tail = .05

c)     df = (3, 30) and area in the right tail = .05

10. The following ANOVA table, based on information obtained for three samples selected from three independent populations that are normally distributed with equal variances, has a few missing values.

 Source ofVariation Degrees ofFreedom Sum ofSquares MeanSquare Value of theTest Statistic Between 2 II 19.2813 Within 89.3677 III F = ___V__ = VIIVI Total 12 IV

a)     Find the missing values and complete the ANOVA table. Round to four decimal places.

b)    Using α = .01, what is your conclusion for the test with the null hypothesis that the means of the three populations are all equal against the alternative hypothesis that the means of the three populations are not all equal?

1. Reject H0. Conclude that the means of the three populations are equal.
2. Reject H0. Conclude that the means of the three populations are not equal.
3. Do not reject H0. Conclude that the means of the three populations are equal.
4. Do not reject H0. Conclude that the means are of the three populations are not equal.

## Calculate the price of your order

275 Words
We'll send you the first draft for approval by September 11, 2018 at 10:52 AM
Total Price:
\$9
The price is based on these factors:
Number of Pages
Urgency
Principle features
• Free cover page and Reference List
• Plagiarism-free Work
• Affordable Prices
• Unlimited Editing
Upon-Request options
• List of used sources
• Anytime delivery
• Part-by-part delivery
• Writer’s sample papers
• Professional guidance
Paper formatting
• Double spaced paging
• Any citation style (APA, MLA, Chicago/Turabian, Harvard)
• 275 words/page
• Font 12 Arial/Times New Roman

### •Unique Samples

We offer essay help by crafting highly customized papers for our customers. Our expert essay writers do not take content from their previous work and always strive to guarantee 100% original texts. Furthermore, they carry out extensive investigations and research on the topic. We never craft two identical papers as all our work is unique.

### •All Types of Paper

Our capable essay writers can help you rewrite, update, proofread, and write any academic paper. Whether you need help writing a speech, research paper, thesis paper, personal statement, case study, or term paper, Homework-aider.com essay writing service is ready to help you.