9.4.1 Test a hypothesis about a proportion using the P-value 27 [7 points] Example: Hypothesis Test (P-value) An educational specialist is studying attitudes of teachers about the use of virtual reality in the classroom. She samples 555 teachers and finds that 417 of them believe that virtual reality would have a positive effect. Can she conclude that the proportion of teachers who believe it will have a positive effect is greater than 90%? Use the = 0.05 level of significance. [Hints: z=> p-Po Po(1-Po) Z Statistic: n To get Z value in calculator: STAT->Tests->1-PropZtest->Stats-> (pc * n, prop: po > po Calculate. Output will be: z, po, p, n To find p from z use this function: normalcdf (3.13.199.0.1) 8.740986195:4