Part 1. For a 95% confidence interval for u when df = 19, the
t-critical value is _______
Part 2: For a 90% confidence interval for u when df = 19, the
t-critical value is _______
Part 3: For a 99% confidence interval for u when df = 19, the
t-critical value is _______
Part 4: For a 95% confidence interval for u when df = 42, the
t-critical value is _______
Part 5: For a 99% confidence interval for...
99% confidence interval of the difference
(Height in feet)
F
Sig.
t
df
Sig. (2-tailed)
Mean difference
Std. Error difference
Lower
upper
Equal variances assumed
2.854
.091
-1.608
3573
.108
-.032
.020
-.082
.019
International Student
N
Mean
Std. Deviation
Std. Error Mean
No
3280
5.05
.322
.006
Yes
295
5.09
.328
.019
This question has 10
parts. Each of the 10 parts (Part
A - Part J) has a dropdown list of possible answers. Choose the
best answer from...
Determine the t critical value for a two-sided confidence interval in each of the following situations. (Round your answers to three decimal places.) (a) Confidence level = 95%, df = 5 (b) Confidence level = 95%, df = 10 (c) Confidence level = 99%, df = 10 (d) Confidence level = 99%, n = 10 (e) Confidence level = 98%, df = 22 (f) Confidence level = 99%, n = 36 You may need to use the appropriate table in the Appendix of Tables to answer this...
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%
and sample size
9
(b) For level
99.5%
and sample size
14
(c) For level
80%
and sample size
29
(d) For level
90%
and sample size
11
What critical value t* from Table C would you use for a
confidence interval for the mean of the population in each of the
following situations?
A 80 % confidence interval based on n = 20 observations
What critical value t* from Table C would you use for a
confidence interval for the mean of the population in each of the
following situations? (Use 3 decimal places.)
(a) A 95% confidence interval based on n = 15
observations.
t* =
(b) A 99% confidence interval from an SRS of 29
observations.
t* =
(c) A 80% confidence interval from a sample of size 9.
t* =