Question

1 point) Independent random samples, each containing 80
observations, were selected from two populations. The samples from
populations 1 and 2 produced 30 and 23 successes,
respectively.

Test H0:(p1−p2)=0H0:(p1−p2)=0 against Ha:(p1−p2)≠0Ha:(p1−p2)≠0. Use
α=0.01α=0.01.

(a) The test statistic is

(b) The P-value is

(c) The final conclusion is

**A.** We can reject the null hypothesis that
(p1−p2)=0(p1−p2)=0 and accept that (p1−p2)≠0(p1−p2)≠0.

**B.** There is not sufficient evidence to reject the
null hypothesis that (p1−p2)=0(p1−p2)=0.

Answer #1

The statistical software output for this problem is:

From above output:

a) Test statistic = **1.1758**

b) p - Value = **0.2397**

c) **Option B** is correct.

Independent random samples, each containing 80 observations,
were selected from two populations. The samples from populations 1
and 2 produced 16 and 10 successes, respectively.
Test H0:(p1−p2)=0 against Ha:(p1−p2)≠0. Use α=0.1
(a) The test statistic is
(b) The P-value is
(c) The final conclusion is
A. There is not sufficient evidence to reject the
null hypothesis that (p1−p2)=0
B. We can reject the null hypothesis that
(p1−p2)=0 and accept that (p1−p2)≠0

Independent random samples, each containing 90 observations,
were selected from two populations. The samples from populations 1
and 2 produced 73 and 64 successes, respectively.
Test H0:(p1−p2)=0 against Ha:(p1−p2)≠0. Use α=0.09
The P-value is
The final conclusion is
A. There is not sufficient evidence to reject the
null hypothesis that (p1−p2)=0
B. We can reject the null hypothesis that
(p1−p2)=0 and accept that (p1−p2)≠0

Independent random samples, each containing 60 observations,
were selected from two populations. The samples from populations 1
and 2 produced 26 and 15 successes, respectively. Test H0:(p1−p2)=0
against Ha:(p1−p2)>0 Use α=0.08
(a) The test statistic is
(b) The P-value is
(c) The final conclusion is
A. We can reject the null hypothesis that (p1−p2)=0 and accept
that (p1−p2)>0
B. There is not sufficient evidence to reject the null
hypothesis that (p1−p2)=0

Independent random samples, each containing 60 observations,
were selected from two populations. The samples from populations 1
and 2 produced 42 and 30 successes, respectively.
Test H0:(p1−p2)=0 against Ha:(p1−p2)≠0. Use α=0.09
(a) The test statistic is
(b) The P-value is
(c) The final conclusion is
A. We can reject the null hypothesis that
(p1−p2)=0(p1−p2)=0 and accept that (p1−p2)≠0(p1−p2)≠0.
B. There is not sufficient evidence to reject the
null hypothesis that (p1−p2)=0(p1−p2)=0.

Independent random samples, each containing 70 observations,
were selected from two populations. The samples from populations 1
and 2 produced 33 and 23 successes, respectively. Test H 0 :( p 1 −
p 2 )=0 H0:(p1−p2)=0 against H a :( p 1 − p 2 )≠0 Ha:(p1−p2)≠0 .
Use α=0.01 α=0.01 . (a) The test statistic is
(b) The P-value is
(c) The final conclusion is
A. We can reject the null hypothesis that ( p 1 − p 2...

Independent random samples, each containing 500 observations,
were selected from two binomial populations. The samples from
populations 1 and 2 produced 388 and 188 successes,
respectively.
(a) Test H0:(p1−p2)=0 against Ha:(p1−p2)≠0. Use α=0.04
test statistic =
rejection region |z|>
The final conclusion is
A. There is not sufficient evidence to reject the null hypothesis
that (p1−p2)=0.
B. We can reject the null hypothesis that (p1−p2)=0 and support
that (p1−p2)≠0.
(b) Test H0:(p1−p2)≤0 against Ha:(p1−p2)>0. Use α=0.03
test statistic =
rejection...

Independent random samples, each containing 90 observations,
were selected from two populations. The samples from populations 1
and 2 produced 44 and 35 successes, respectively.
Test H0:(p1?p2)=0H0:(p1?p2)=0 against
Ha:(p1?p2)>0Ha:(p1?p2)>0. Use ?=0.02?=0.02
(a) The test statistic is:
(b) The P-value is:

Independent random samples, each containing 70 observations,
were selected from two populations. The samples from populations 1
and 2 produced 42 and 35 successes, respectively. Test H0:(p1−p2)=0
H 0 : ( p 1 − p 2 ) = 0 against Ha:(p1−p2)≠0 H a : ( p 1 − p 2 ) ≠
0 . Use α=0.06 α = 0.06 . (a) The test statistic is (b) The P-value
is (c) The final conclusion is A. There is not sufficient evidence...

Independent random samples, each containing 50 observations,
were selected from two populations. The samples from populations 1
and 2 produced 31 and 25 successes, respectively. Test H0:(p1−p2)=0
against Ha:(p1−p2)≠0. Use α=0.05.
(a) The test statistic is
(b) The P-value is

(1 point) Independent random samples, each containing 60
observations, were selected from two populations. The samples from
populations 1 and 2 produced 34 and 29 successes, respectively.
Test H0:(p1−p2)=0 H 0 : ( p 1 − p 2 ) = 0 against Ha:(p1−p2)≠0 H a
: ( p 1 − p 2 ) ≠ 0 . Use α=0.07 α = 0.07 .
(a) The test statistic is
(b) The P-value is

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