t-distribution Confidence Level 60 70 80 85 90 95 98 99 99 8 99 9 Level of Significance 2 Tailed
tt.pdf
Appendix: Critical Values Tables 434 Table A 1: Normal Critical Values for Confidence Levels Confidence Level, C Critical Value, zc 99
appendix_table.pdf
z 0 000 0 674 0 842 1 036 1 282 1 645 1 960 2 326 2 576 3 090 3 291 0 50 60 70 80 90 95 98 99 99 8 99 9 Confidence Level
t-table.pdf
What is the margin of error for 99 confidence? ? Similarly, the z value for central 99 is invNorm( 995)=2 576 ?
Confidence%20Intervals.pdf
-t critical value t curve Central area t critical values Confidence area captured: 0 90 0 95 0 98 0 99 Confidence level: 90 95 98 99
Utts-Heckard_t-Table.pdf
Confidence Interval Critical Values, z?/2 Level of Confidence Critical Value, z ?/2 0 90 or 90 1 645 0 95 or 95 1 96 0 98 or 98 2 33 0 99 or 99
distribution_tables_normal_studentt_chisquared.pdf
[0 834, 3 769] 5 The rule of thumb is written for z, but with n = 100 the t(99) and standard normal distributions are
class21-slides-all.pdf
In the above example, a confidence level of 95 was selected The value of z* for a specific confidence level is found using a table in the back of a statistics
confidence_intervals_notes.pdf
sample mean X is close to normally distributed with Because the area under the standard normal curve What about the 99 confidence interval?
ch7_0.pdf