Question 1 | Business & Finance homework help


Question 1

An investigator claims, after a while 95 percent reliance, that the moderationtime betwixt 10 and 16 miles understands the moderation mitigate interspace for all California mitigaters. To entertain 95 percent reliance signifies that:
a. the mysterious population moderation is definitely betwixt 10 and 16 miles
b. if these moderationtimes were pretended for a desire succession of patterns, closely 95 percent would understand the mysterious moderation mitigate interspace for all Californians
c. if pattern moderations were obtained for a desire succession of patterns, closely 95 percent of all pattern moderations would be betwixt 10 and 16 miles
d. the mysterious population moderation is betwixt 10 and 16 miles after a while befoulment .95

Question 2
Any transfer to a better reliance roll produces a:
a. narrower, over definite reliance moderationtime
b. navigate, close definite reliance moderationtime
c. navigate, over definite reliance moderationtime
d. narrower, close definite reliance moderationtime

Question 3
the larger the pattern greatness,
a. the larger the gauge fault and the narrower the reliance moderationtime
b. the smaller the gauge fault and the navigate the reliance moderationtime
c. the smaller the gauge fault and the narrower the reliance moderationtime
d. the larger the gauge fault and the navigate the reliance moderationtime


Question 4
The t disposal is most opposed from the gauge ordinary disposal when pattern greatness is:
a. medium
b. large
c. very small
d. infinitely large

Question 5
A fatigue manufacturer wishes to appearance that, on mediocre, a steel-belted radial fatigue provides over than 50,000 miles of hollow. A stray pattern yields a pattern moderation of 53,500 and a gauge discontinuance of 5,300 miles. From the manufacturer's perspective, it would be best of the pattern greatness were:
a. 20
b. 30
c. 40
d. 50


Question 6
Even though the population gauge discontinuance is mysterious, an investigator uses z rather than the over embezzle t to criterion a theory at the .01 roll of import. In this plight the penny roll of import of this criterion is:
1. smaller than .01
2. mysterious
3. correspondent to .01
4. larger than .01

Question 7
the t criterion for two recalcitrant patterns has degrees of immunity correspondent to the
1. two pattern greatnesss entirely
2. two pattern greatnesss entirely minus one
3. two pattern greatnesss entirely minus two
4. two pattern greatnesss entirely minus three
5. larger pattern

Question 8
The p-value for a criterion represents the befoulment
a. of the observed termination, whether the void theory is penny or false
b. of the observed termination, ardent that the void theory is penny
c. that the void theory is penny
d. that the sentence is improve


Question 9
If two recalcitrant patterns each consists of 20 subjects, a t-criterion for a estrangement betwixt their population moderations obtain complicate how numerous degrees of immunity?
a. 19
b. 20
c. 38
d. 39
e. 40

Question 10
The public effect following all of these t-tests is that you are:
a. singly comparing the pattern moderations to the population moderations, past you don't comprehend the penny estrangement in the pattern or in the population, and the estrangement doesn't stuff as desire as the pattern moderations are opposed.
b. comparing after a whilein change to betwixt change by dividing the befoulment change after a whilein the patterns by the invariable estrangement betwixt two patterns (or betwixt a pattern and a population).
c. comparing betwixt change to after a whilein change by dividing the invariable estrangement betwixt two patterns, or betwixt a pattern and a population, by the befoulment change after a whilein the patterns.
d. comparing pattern change to population change by dividing one by the other

Question 11
Given two recalcitrant patterns after a while moderations = 33 and 24, the estimated gauge fault = 3, and each pattern had 5 scores, what is the p-value for: a two-tailed criterion? a one-tailed criterion?

a. two-tailed: p < .01 ; one-tailed: p < .001

b. two-tailed: p > .05 ; one-tailed: p < .05

c. two-tailed: p < .05 ; one-tailed: p < .01

d. two-tailed: p < .01 ; one-tailed: p < .01

e. two-tailed: p < .05 ; one-tailed: p < .05