An educational psychologist is investigating a new mnemonic technique designed to improve students' test scores. The null hypothesis is H0:μ=60H_0: \mu = 60H0:μ=60 (the technique has no effect) and the alternative hypothesis is H1:μ>60H_1: \mu > 60H1:μ>60 (the technique improves scores). The researcher uses a significance level of 5%.
The sample data yields a ppp-value of 0.032, leading the psychologist to reject the null hypothesis. However, in reality, the mnemonic technique has no effect on students' performance.
Which of the following describes this outcome?
A Type II error
A Type I error
A correct rejection of the null hypothesis
A standard error of the mean
644 exam-style questions on OCR A Level Psychology Research methods and techniques. Each one has a worked solution and a mark scheme showing where the marks go.