Question

15% of all college students volunteer their time. Is the percentage of college students who are volunteers larger for students receiving financial aid? Of the 366 randomly selected students who receive financial aid, 62 of them volunteered their time. What can be concluded at the α = 0.05 level of significance? For this study, we should use z-test for a population proportion The null and alternative hypotheses would be: H 0 : p = (please enter a decimal) H 1 : p > (Please enter a decimal) The test statistic z = (please show your answer to 3 decimal places.) The p-value = (Please show your answer to 4 decimal places.) The p-value is > α Based on this, we should Select an answer the null hypothesis. Thus, the final conclusion is that ... The data suggest the populaton proportion is significantly higher than 15% at α = 0.05, so there is sufficient evidence to conclude that the percentage of financial aid recipients who volunteer is higher than 15%. The data suggest the population proportion is not significantly higher than 15% at α = 0.05, so there is insufficient evidence to conclude that the percentage of financial aid recipients who volunteer is higher than 15%. The data suggest the population proportion is not significantly higher than 15% at α = 0.05, so there is sufficient evidence to conclude that the percentage of financial aid recipients who volunteer is equal to 15%.

Answer #1

15% of all college students volunteer their time. Is the
percentage of college students who are volunteers larger for
students receiving financial aid? Of the 354 randomly selected
students who receive financial aid, 60 of them volunteered their
time. What can be concluded at the α = 0.10 level of significance?
For this study, we should use The null and alternative hypotheses
would be: H 0 : (please enter a decimal) H 1 : (Please enter a
decimal) The test...

20% of all college students volunteer their time. Is the
percentage of college students who are volunteers different for
students receiving financial aid? Of the 363 randomly selected
students who receive financial aid, 58 of them volunteered their
time. What can be concluded at the α = 0.10 level of significance?
For this study, we should use The null and alternative hypotheses
would be: H 0 : (please enter a decimal) H 1 : (Please enter a
decimal) The test...

12% of all college students volunteer their time. Is the
percentage of college students who are volunteers different for
students receiving financial aid? Of the 311 randomly selected
students who receive financial aid, 56 of them volunteered their
time. What can be concluded at the αα = 0.10 level of
significance?
For this study, we should use Select an answer z-test for a
population proportion t-test for a population mean
The null and alternative hypotheses would be:
H0:H0: ? p...

12% of all college students volunteer their time. Is the
percentage of college students who are volunteers different for
students receiving financial aid? Of the 336 randomly selected
students who receive financial aid, 24 of them volunteered their
time. What can be concluded at the αα = 0.10 level of
significance?
For this study, we should use Select an answer t-test for a
population mean z-test for a population proportion
The null and alternative hypotheses would be:
H0:H0: ? μ...

15% of all college students volunteer their time. Is the
percentage of college students who are volunteers larger for
students receiving financial aid? Of the 332 randomly selected
students who receive financial aid, 53 of them volunteered their
time. What can be concluded at the α= 0.05 level of
significance?
The test statistic is ?
The p-value = (Please show your answer to 4 decimal
places.)

1.
Only about 15% of all people can wiggle their ears. Is this
percent higher for millionaires? Of the 303 millionaires surveyed,
48 could wiggle their ears. What can be concluded at the α
= 0.10 level of significance?
For this study, we should use
The null and alternative hypotheses would be:
H0:
(please enter a decimal)
H1:
(Please enter a decimal)
The test statistic
The p-value = (Please show your answer to 3 decimal
places.
The p-value...

15% of all Americans suffer from sleep apnea. A researcher
suspects that a higher percentage of those who live in the inner
city have sleep apnea. Of the 314 people from the inner city
surveyed, 50 of them suffered from sleep apnea. What can be
concluded at the level of significance of αα = 0.05?
For this study, we should use Select an answer t-test for a
population mean z-test for a population proportion
The null and alternative hypotheses would...

The average test score for the statistics course is 74%. A
professor wants to see if the average test score for students who
are given colored pens on the first day of class is higher. The
test scores for the 12 randomly selected students who were given
the colored pens are shown below. Assume that the distribution of
the population is normal.
81, 61, 86, 63, 74, 91, 62, 70, 80, 94, 70, 87
What can be concluded at the...

The average American gets a haircut every 44 days. Is the
average different for college students? The data below shows the
results of a survey of 14 college students asking them how many
days elapse between haircuts. Assume that the distribution of the
population is normal. 34, 34, 48, 47, 33, 36, 33, 47, 33, 50, 33,
41, 39, 31 What can be concluded at the the α = 0.01 level of
significance level of significance? For this study, we...

Only 16% of registered voters voted in the last election. Will
voter participation decline for the upcoming election? Of the 389
randomly selected registered voters surveyed, 43 of them will vote
in the upcoming election. What can be concluded at the α = 0.10
level of significance? For this study, we should use The null and
alternative hypotheses would be: H0: (please enter a decimal) H1:
(Please enter a decimal) The test statistic = (please show your
answer to 3...

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