know the z-score of the central C in a standard-normal distribution Call this 'z' ? Our confidence interval is p±z*SE(p) ? p is the sample proportion
Confidence%20Intervals.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
Construct and interpret a confidence interval for the mean of a Normal the average score for the entire sample have a Normal distribution
confidence_intervals_notes.pdf
Table of z values and probabilities for the standard normal distribution z is the Confidence Interval for the mean (? known): ¯x± z ?
E2A.F2016.pdf
Definition of alpha, the level of significance: The highest acceptable p-value that we will use to reject the null hypothesis The default alpha is 0 05
Lecture_Wk08.pdf
Appendix: Critical Value Tables Table A 1: Normal Critical Values for Confidence Levels Table A 2: Critical Values for t-Interval
appendix_table.pdf
Confidence Intervals and Z-Scores While the normal distribution typically describes our raw data, What is the percentile of a score of 18?
9_-_t-distribution_confidence_intervals__z_scores.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
Because the area under the standard normal curve 6 Basic Properties of Confidence Intervals For a given sample, the CI can be expressed either as
ch7_0.pdf