Question
Find the critical value zα/2 needed to construct a 79% confidence interval.
Find the critical value zα/2 needed to construct a 79% confidence interval.
Homework Answers
Answer #1
Solution:
c = 79% = 0.79
= 1- c = 1- 0.79 = 0.21
/2
= 0.21
2
= 0.105
1- (/2)
= 1 - 0.105 = 0.895
Search the probability 0.895 in the Z table and see corresponding z value
=
1.254 or nearly 1.25
Not the answer you're looking for?
Similar Questions
1)Find the critical value zα/2 needed to construct a(n) 97% confidence interval 2)A college admissions officer...
1)Find the critical value zα/2 needed to construct
a(n) 97% confidence interval
2)A college admissions officer takes a simple random sample of
110 entering freshmen and computes their mean mathematics SAT score
to be 465. Assume the population standard deviation is
Construct a 90% confidence interval for the mean mathematics SAT
score for the entering freshmen class.
3)
In a small-overlap front crash test, a car is crashed into a
simulated telephone pole and the maximum intrusion of debris into...
1) Find the critical value t (a/2) needed to construct a confidence interval of the given...
1) Find the critical value t (a/2) needed to construct a
confidence interval of the given level with the given sample size.
Round the answers to three decimal places
a) 98% sample size 11
critical value-
b) for level 95% and sample size 25
critical value-
c)for level 99% and sample size 14
2) a sample of size n equals 45 has a sample mean X equals 56.9
and sample standard deviation s equals 9.4.
construct a 99% confidence interval...
Use Table A.3 to find the critical value 2 ta/2 needed to construct a confidence interval...
Use Table A.3 to find the critical value 2
ta/2 needed to construct a confidence interval
of the given level with the given sample size:
a. Level 99%, sample size 19
b. Level 90%, sample size 172
Find the critical value t a/2 needed to construct a confidence interval of the given level...
Find the critical value t a/2 needed to construct a confidence
interval of the given level with th sample size. Round the amswers
to theee decimal places.
For level 95% and sample size 11?
For level 98% and sample size 26?
For level 99% and sampke size 12?
1.Find the critical value tα/2 needed to construct a confidence interval of the given level with given...
1.Find the critical value tα/2 needed to construct a
confidence interval of the given level with given sample
size.
Level 90%, sample size 21
Group of answer choices
1.725
1.325
1.721
1.645
2.
Find the probability P(-0.62 < z < -0.01) using the
standard normal distribution.
Group of answer choices
0.2284
0.3584
0.7716
0.1900
Find the critical value t/α2 needed to construct a confidence interval of the given level with...
Find the critical value
t/α2
needed to construct a confidence interval of the given level
with the given sample size. Round the answers to three decimal
places.
(a) For level
99.5%
and sample size
6
(b) For level
95%
and sample size
15
(c) For level
80%
and sample size
29
(d) For level
98%
and sample size
12
Find the critical value t/α2 needed to construct a confidence interval of the given level with...
Find the critical value
t/α2
needed to construct a confidence interval of the given level
with the given sample size. Round the answers to three decimal
places.
Part 1 of 4
(a) For level
99%
and sample size
5
Part 2 of 4
(b) For level
90%
and sample size
14
Part 3 of 4
(c) For level
99.5%
and sample size
28
Part 4 of 4
(d) For level
95%
and sample size
11
1. Do one of the following, as appropriate: (a) Find the critical value zα/2, (b) find...
1. Do one of the following, as appropriate: (a) Find the
critical value zα/2, (b) find the critical value
tα/2, (c) state that neither the normal nor the t
distribution applies.
90%; n = 10; σ is unknown; population appears to be normally
distributed.
Group of answer choices
A. zα/2 = 2.262
B. zα/2 = 1.383
C. tα/2 = 1.833
D. tα/2 = 1.812
2. Find the margin of error.
95% confidence interval; n = 91 ; = 53, s =...
The value of zα/2 when determine the 96% confidence interval for p.
The value of zα/2 when determine the 96% confidence interval for
p.
Determine the critical value, zα/2 that corresponds to the given levels of confidence, (a) (1 pt)...
Determine the critical value, zα/2 that corresponds to the given
levels of confidence,
(a) (1 pt) 90%
(b) (1 pt) 96%
ADVERTISEMENT
Need Online Homework Help?
Get Answers For Free
Most questions answered within 1 hours.
ADVERTISEMENT
Active Questions
asked 7 minutes ago
asked 7 minutes ago
asked 17 minutes ago
asked 18 minutes ago
asked 22 minutes ago
asked 23 minutes ago
asked 24 minutes ago
asked 24 minutes ago
asked 26 minutes ago
asked 33 minutes ago
asked 38 minutes ago
asked 59 minutes ago