The expected count for (sophomore, Tacos) is computed here as:
E(Sophomore, Tacos) = n(Sophomore) n(Tacos) / n(Total)
= (19 + 25 + 10 + 12)*(18 + 25 + 22 + 16) / 245
= 66*81 / 245
= 21.8204
Therefore 21.8204 is the expected count here.
b) Degrees of freedom here is computed as:
Df = (num of columns - 1)(num of rows - 1) = (4 - 1)(4 - 1) = 9
Therefore the p-value here is computed from chi square distribution tables as:
Therefore 0.5165 is the required p-value here.
Nick decided to test if there was an association between students' class level and their food...
Chapter 9 The 94 students in a statistics class are categorized by gender and by the year in school. The numbers obtained are displayed belovw Year in school Gender Freshman Sophomore Junior Senior Graduate Total Male Female Total 31 63 94 17 17 19 23 24 13 24 Suppose we wish to test the null hypothesis that a student is twice likely to be a female than a male. Under the null: 1. a. What is the expected number of...
blem MAA Select an Answer RICA Logged in as yamegandi z Test of a Single Mean T Test of a Single Mean F 2 Test of a Single Proportion e m 12 T Test of a Single Proportion z Test for Comparing Means T Test for comparing Means Hypothesis Test Z Test for comparing Proportions . Whether a student starts college in the Fall Spring, or Summer has no no T Test for Matched pairs Chi-Squared Test for Goodness-of-Fit 2....