Overview
these are T or F questions.
Q1: Assume that your plan to use a significance level of α = 0.05 to test the claim that “The proportion of workers who get jobs through networking is at least 0.8”. This test is right tailed test.
Q2; The maker of Surya bulbs wants to demonstrate that their bulbs last on an average of at least 100 hours longer than Ortan bulbs. Two independent random samples of 100 bulbs of each kind are selected. The sample average lives for Surya bulbs found to be 1550 hours and for Ortan bulbs is 2020 hours. Assume that the standard deviation s1 is 75hrs and the standard deviation s2 is 60hrs respectively. The test Statistic F to test this claim is 3
Q3: The degree of freedom of t-test for independent samples (where σ1 & σ2 are unknown and not assumed to be equal) with sample sizes n1=42 and n2= 41 is equal to 41.