presidential candidate's aide estimates that, among all college students, the proportion  p  who intend to vote in the upcoming election is at least  70% . If  145  out of a random sample of  215  college students expressed an intent to vote, can we reject the aide's estimate at the  0.05  level of significance? Perform a one-tailed test. Then complete the parts below. Carry your intermediate computations to three or more decimal places and round your answers as specified in the table. (If necessary, consult a list of formulas.)   (a) State the null hypothesis  H0  and the alternative hypothesis  H1 . H0: H1: (b) Determine the type of test statistic to use.   ▼(Choose one)   (c) Find the value of the test statistic. (Round to three or more decimal places.)   (d) Find the critical value. (Round to three or more decimal places.)   (e) Can we reject the aide's estimate that the proportion of college students who intend to vote is at least  70%

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A presidential candidate's aide estimates that, among all college students, the proportion 
p
 who intend to vote in the upcoming election is at least 
70%
. If 
145
 out of a random sample of 
215
 college students expressed an intent to vote, can we reject the aide's estimate at the 
0.05
 level of significance?

Perform a one-tailed test. Then complete the parts below.

Carry your intermediate computations to three or more decimal places and round your answers as specified in the table. (If necessary, consult a list of formulas.)

 

(a) State the null hypothesis 
H0
 and the alternative hypothesis 
H1
.
H0:
H1:
(b) Determine the type of test statistic to use.
  ▼(Choose one)
 
(c) Find the value of the test statistic. (Round to three or more decimal places.)
 
(d) Find the critical value. (Round to three or more decimal places.)
 
(e) Can we reject the aide's estimate that the proportion of college students who intend to vote is at least 
70%
?
Yes No
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