ppt
... – Not for making inferences about population – Can be first step of data analysis – Also useful if sample is all you’re interested in • E.g. average age of students in class ...
... – Not for making inferences about population – Can be first step of data analysis – Also useful if sample is all you’re interested in • E.g. average age of students in class ...
Chapter 20 Inference about a Population Mean
... This chapter is almost exactly like chapter 16 and 17 in that it is about confidence intervals and inference tests. The major difference is that the generally unrealistic condition that the population standard deviation is known is discarded. The details of finding a confidence interval and tests ar ...
... This chapter is almost exactly like chapter 16 and 17 in that it is about confidence intervals and inference tests. The major difference is that the generally unrealistic condition that the population standard deviation is known is discarded. The details of finding a confidence interval and tests ar ...
SHW10 - public.asu.edu
... increases, the critical value for rejecting the null hypothesis [decreases, remains the same, increases], for the t test statistic, as n increases, the critical value for rejecting the null hypothesis [decreases, remains the same, increases]. 8 [O]. An owner of a factory knows that the population of ...
... increases, the critical value for rejecting the null hypothesis [decreases, remains the same, increases], for the t test statistic, as n increases, the critical value for rejecting the null hypothesis [decreases, remains the same, increases]. 8 [O]. An owner of a factory knows that the population of ...
AP Statistics: Section 10.1 A
... Example: The admissions director at Big City University proposes using the IQ scores of current students as a marketing tool. The university decides to provide him with enough money to administer IQ tests to an SRS of 50 of the university’s 5000 freshman. The mean IQ score for the sample is 112. Wh ...
... Example: The admissions director at Big City University proposes using the IQ scores of current students as a marketing tool. The university decides to provide him with enough money to administer IQ tests to an SRS of 50 of the university’s 5000 freshman. The mean IQ score for the sample is 112. Wh ...
File - Jenne Meyer PhD
... When comparing two different, independent populations with unknown variances that are assumed equal) with small n, the test statistic looks like ...
... When comparing two different, independent populations with unknown variances that are assumed equal) with small n, the test statistic looks like ...
Ch9b
... Press STAT and select TESTS Scroll down to 2-SampFTest press ENTER Select Input: Data or Stats. For Stats: Type in sx1: (1st sample st. deviation) n1: (1st sample size) sx2: (2nd sample st. deviation) n2: (2nd sample size) choose H1: s1 ≠s2s2
(two tails) (left tail) (right tail)
...
... Press STAT and select TESTS Scroll down to 2-SampFTest press ENTER Select Input: Data or Stats. For Stats: Type in sx1: (1st sample st. deviation) n1: (1st sample size) sx2: (2nd sample st. deviation) n2: (2nd sample size) choose H1: s1 ≠s2
Mrs. Daniel- AP Stats WS 7.1 Tall Girls According to the National
... According to the National Center for Health Statistics, the distribution of heights for 16-year-old females is modeled well by a Normal density curve with mean μ = 64 inches and standard deviation σ = 2.5 inches. To see if this distribution applies at their high school, an AP Statistics class takes ...
... According to the National Center for Health Statistics, the distribution of heights for 16-year-old females is modeled well by a Normal density curve with mean μ = 64 inches and standard deviation σ = 2.5 inches. To see if this distribution applies at their high school, an AP Statistics class takes ...