a. In a similar study using a sample of n = 9 participants, the individuals who wore the shirt produced an average estimate of M= 6.4 with SS = 162. The average number who said they noticed was 3.1. Is the estimate from the participants significantly different from the actual number? Test the null hypothesis that the true mean is ? = 3.1 using a two-tailed test with = .05.
b. Is the estimate from the participants significantly higher than the actual number (? = 3.1)? Use a one-tailed test with ? = .05.© BrainMass Inc. brainmass.com November 30, 2021, 5:40 am ad1c9bdddf
a. The null hypothesis is the estimate from the participants the same as the actual number. mu=3.1
The alternative hypothesis is it is significantly different from the actual number mu> or < 3.1.
At 0.05 significance level, degree of freedom is 9-1=8, the critical t value is 2.31. The ...
The solution provides detailed explanation how to perform one tailed or two tailed hypothesis test.