Psy 87540 midterm iii-suppose you drew a random sample from a

1. Suppose you hatch a casual specimen from a population where the average is 100. The plummet fallacy of the sampling disposal is 10. The average for your specimen is 80. What could you finish environing your specimen?
A
. The specimen average does not befall very frequently by casualty in the sampling disposal of averages and probably did not follow from the absorbed population.
B
. The specimen average befalls very frequently by casualty in the sampling disposal of averages and probably did not follow from the absorbed population.
C
. The specimen average does not befall very frequently by casualty in the sampling disposal of averages but probably did follow from the absorbed population.
D
. The specimen average befalls very frequently by casualty in the sampling disposal of averages and probably did follow from the absorbed population. 

2. What do we call that party of the sampling disposal in which esteems are considered too unreasonable to accept befallred by casualty?
A
. Region of value esteem
B
. Region of fastidious esteem
C
. Region of refusal
D
. Critical esteem

3. Suppose you admit a lot of candy out of a jar, observe to determine its garbling, then put it body into the jar antecedently you casually pickededed the proximate lot of candy. This stamp of sampling is called
A
. an fractions incident.
B
. sampling delay replacement.
C
. a relying incident.
D
. sampling delayout replacement. 

4. There are 26 red cards in a unimpeded marshal and 26 ebon cards. The verisimilitude of casually pickededing a red card or a ebon card is 26/52 = 0.50. Suppose you casually pickededed a card from the marshal five seasons, each season replacing the card and reshuffling antecedently the proximate pick. Each of the five pickededions has resulted in a red card. On the sixth halt, the verisimilitude of getting a ebon card
A
. has got to be low consequently you've gotten so manifold red cards on the preceding halts.
B
. has got to be violent consequently you've gotten so manifold red cards on the preceding halts.
C
. is the corresponding as it has regularly been if the marshal is a spotless marshal.
D
. needs to be recomputed consequently you are sampling delay replacement. 

5. What can you finish environing a specimen average that falls delayin the part of refusal?
A
. The specimen probably denotes some population other than the one on which the sampling disposal was based.
B
. The specimen denotes the population on which the sampling disposal was based.
C
. Another specimen needs to be collected.
D
. The specimen should accept follow from the absorbed population.

6. What can we finish when the despotic esteem of a z-jaw for a specimen average is bigr than the fastidious esteem?
A
. The casual pickededion process was passed improperly.
B
. The specimen average is reasonably slight to accept follow from the absorbed population by casual sampling.
C
. The specimen average denotes the debody raw jaw population on which the sampling disposal is based.
D
. The specimen average does not denote the debody raw jaw population on which the sampling disposal is based. 

7. When rolling a brace of spotless dice, the verisimilitude of rolling a whole object esteem of “7” is 0.17. If you rolled a brace of dice 1,000 seasons and the object esteem of “7” appeared 723 seasons, what would you probably finish?

A. This is not so unreasonable as to fashion you hesitate the spotlessness of the dice.
B
. Although not impracticable, this outfollow is so unreasonable that the spotlessness of these dice is questionable.
C
. Since the whole object esteem of “7” has the violencriterion verisimilitude of any incident in the sampling disposal, this is an very-much slight omission.
D
. It is impracticable for this to fall if the dice are spotless. 

8.  What is the embezzle outfollow of a z-test?
A
. Reject and accept
B
. Reject and accept
C
. Reject ; accept
D
. Fail to exclude ; accept

9. The ineffectual fancy explains the
A
. specimen statistic and the part of refusal.
B
. specimen statistic if a connection does not await in the specimen.
C
. population parameters denoteed by the specimen postulates if the predicted connection awaits.
D
. population parameters denoteed by the specimen postulates if the predicted connection does not await. 

10. In a one-tailed criterion, is symbolical barely if it lies
A
. nearer µ than and has a contrariant memorial from
B
. in the body of the disposal further and has a contrariant memorial from
C
. nearer µ than and has the corresponding memorial as
D
. in the body of the disposal further and has the corresponding memorial as

11. The key contrariety betwixt parametric and nonparametric processs is that parametric processs
A
. do not exact that costive assumptions be met. 

B. exact that fixed costive assumptions be met.
C
. are used for population disposals that are skewed.
D
. are used for population disposals that accept pretended jaws. 

12. Which of the aftercited accurately defines a Stamp I fallacy?
A
. Rejecting when is true
B
. Rejecting when is fallacious
C
. Retaining when is true
D
. Retaining when is fallacious

13. If and what is the esteem of
A
.2.58
B
.0.52
C
.–2.58
D
. 0.78

14. What falls to the verisimilitude of committing a Stamp I fallacy if the correspondentize of memorialificance is transitional from a=0.01 to a=0.05?
A
. The verisimilitude of committing a Stamp I fallacy succeed decrease.
B
. The verisimilitude of committing a Stamp I fallacy succeed growth.
C
. The verisimilitude of committing a Stamp I fallacy succeed rest the corresponding.
D
. The modify in verisimilitude succeed halt on your specimen bigness. 

15. Suppose you execute a two-tailed memorialificance criterion on a interrelation betwixt the sum of books learn for force and the sum of merit hours admitn, using 32 participants. Your is –0.15, which is not a symbolical interrelation coefficient. Which of the aftercited is the set-right way to noise this opinion?
A
. r(32) = –0.15, p > 0.05
B
. r(31) = –0.15, p > 0.05
C
. r(30) = –0.15, p < 0.05
D
. r(30) = –0.15, p > 0.05

16. Which of the aftercited would growth the might of a memorialificance criterion for interrelation?
A. Changing a from 0.05 to 0.01
B. Increasing the variability in the Y jaws
C. Changing the specimen bigness from N = 25 to N = 100
D. Changing the specimen bigness from N = 100 to N = 25

17. If a specimen average has a esteem correspondent to µ, the corresponding esteem of t succeed be correspondent to
A
. +1.0.
B
. 0.0.
C
. –1.0.
D
. +2.0. 

18. What is ?
A
. The estimated population plummet deviation
B
. The population plummet deviation
C
. The estimated plummet fallacy of the average
D
. The plummet fallacy of the average

 

19. In a one-tailed memorialificance criterion for a interrelation predicted to be explicit, the ineffectual
fancy is ___________ and the opinion fancy is __________
.
A. Ho: ρ ≤ 0; Ha: ρ > 0
B. Ho: ρ < 0; Ha: ρ ≥ 0
C. Ho: ρ = 0; Ha: ρ > 0
D. Ho: ρ < 0; Ha ρ > 0

20. How is the t-criterion for akin specimens executeed?
A
. By passing a one-specimen t-criterion on the specimen of contrariety jaws
B
. By passing an fractions specimens t-criterion on the specimen of contrariety jaws
C
. By converting the jaws to plummet jaws and then executeing a akin specimens t-test
D
. By measuring the population discord and criterioning it using an fractions specimens t-criterion

21. What does the opinion fancy declare in a two-tailed fractions specimens
experiment?

Ho: mu1-mu2=0
22
. One way to growth might is to maximize the contrariety transacted by the two conditions in the illustration. How is this courteous?
A
. Change a from 0.05 to 0.01.
B
. Change the bigness of N from 100 to 25.
C
. Dememorial and pass the illustration so that all the subjects in a specimen are treated in a consonant manner.
D
. Select two very contrariant correspondentizes of the fractions wavering that are slight to result a proportionately big contrariety betwixt the averages. 

23. Suppose you execute a two-tailed fractions specimens t-test, using a = 0.05, delay 15 participants in one cluster and 16 participants in the other cluster. Your is 4.56, which is symbolical. Which of the aftercited is the set-right way to noise this opinion?
A
. t(31) = 4.56; p< 0.05
B
. t(29) = 4.56; p < 0.05
C
. t(29) = 4.56; p > 0.05
D
. t(29) = 4.56; p = 0.05

24. Suppose that you value the IQ of 14 subjects delay incomprehensive renunciation fingers and the IQ
of 14 subjects delay crave renunciation fingers
. You estimate an fractions specimens t-test,
and the is 0
.29, which is not statistically symbolical. Which of the aftercited is the
most embezzle omission?
A
. There is no connection betwixt prolixity of renunciation finger and IQ.
B
. There is a connection betwixt prolixity of renunciation finger and IQ.
C
. The connection betwixt prolixity of renunciation finger and IQ does not await.
D
. We do not accept convincing averment that our valued connection betwixt prolixity of renunciation finger and IQ is due to anything other than sampling fallacy. 

25. The assumptions of the t-criterion for akin specimens are the corresponding as those for the criterion for fractions specimens ate for requiring
A
. that the relying wavering be valued on an interim or association scale.
B
. that the population denoteed by either specimen conceive a usual disposal.
C
. homogeneity of discord.
D
. that each jaw in one specimen be braceed delay a debody jaw in the other specimen. 

Use SPSS and the granted postulates set to retort the questions below:
26
. Test the age of the participants (AGE1) resisting the ineffectual fancy H 0 = 34. Use a
one-specimen t-test
. How would you noise the results?
A
. t = -1.862, df = 399, p >.05
B
. t = -1.862, df = 399, p <.05
C
. t = 1.645, df = 399, p >.05
D
. t = 1.645, df = 399, p <.05

27. Test to see if there is a symbolical contrariety betwixt the age of the participant and the age of the partner. Use a braceed-specimen t-criterion and an alpha correspondentize of 1%. How would you expone the results of this criterion?
A
. The partners are symbolically older than the participants.
B
. The partners are symbolically younger than the participants
C
. The age of the participants and partners are not symbolically contrariant.
D
. Sometimes the partners are older, sometimes the participants are older. 

28. Look at the interrelation betwixt Risk-Taking (R) and Connection Happiness (HAPPY). Use the plummet alpha correspondentize of 5%. How would you explain the connection?
A
. The connection is non-significant.
B
. There is a symbolical disclaiming connection.
C
. There is a symbolical explicit connection.
D
. The interrelation is zero. 

29. If you casually chose someone from this specimen, what is the casualty that they
described their connection as either Happy or Very Happy?
A
. 32%
B
. 37%
C
. 56%
D
. 69% 

30. Perconceive fractions specimen t-tests on the Lifestyle, Dependency, and Risk-Taking
scores (L, D, and R) comparing men and women (GENDER1)
. Use p &lt; .05 as your
alpha correspondentize
. On each of the three scales, do men or women accept a symbolically
higher jaw?
A
. Lifestyle: Men, Dependency: Women, Risk-Taking: Men.
B
. Lifestyle: Not symbolically contrariant, Dependency: Women, Risk-Taking: Men
C
. Lifestyle: Women, Dependency: Women, Risk-Taking: Men
D
. Lifestyle: Men, Dependency: Men, Risk-Taking: Not symbolically contrariant

 

 

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