Question

According to the Association for Dressings and Salads, 85 % of adults eat salad at least once a week. Shama is a dietician; she thinks the percentage should be higher.  She wishes to test this assertion so she conducts a survey in which she finds that 171 of the respondents eat salad at least once a week. How would you address Shama’s belief at the 10 % level of significance?

Answer 1

from the obrerazed data, no 200, x=1-11 Ã Xin = 0.855 0.VO Null aud alternative hypottieris , Ho: P = 0.15 HEP >0.85 Tut sralistics 2 = (P-PI (1-P9/02 10.855-0.45) 1160.85761-0.85)/200 0.1980 critical value ; Right railed critical value , t.critical = 2.3.26 [ for table] Reject to it ( 2 >1.645) or po value p-value = i norm.sois (0.1980, 17 = 0.425 Duision ; P value > a, 0.4215 >0.10 Donot rejut null uy polheit. the percentage is higher than oss at 0.10 Level of significanes * Please give up nore for ay wolle