We would like to test the following hypotheses: H0 : p = 0.1 HA : p 6= 0.1 The sample size is 120 and the sample proportion is 8.5%. Determine which of the below test(s) is/are appropriate for this situation and explain your reasoning. I. Z-test for a proportion, i.e. proportion test using normal model II. Z-test for comparing two proportions III. 2 test of independence IV. Simulation test for a proportion V. t-test for a mean VI. ANOVA
Section 8: Statistics in Liberal Arts Stat 2220, Espey ➢ Stylometry/stylostatistics: investigation of qualitative features of style (deciding authorship by comparing writing styles) ○ Comparing rates of word use, especially non-contextual words ○ Histograms show the distribution of a sample ➢ Box Plot: graphs a 5-number summary of the data, showing its spread and skew ○ Smallest value ○ 25th percentile ○ 50th percentile ○ 75th percentile ○ Largest value ➢ Determining Percentiles: (n × p) where n = sample size and p = percentile in decimal form ○ When n × pequals a whole number, take the average of this ordered value and the next one ○ When n × pequals
