was that telepathy is possible. To prove this, the number of correct answers from the card were compared with the figure that a person would get right if they were to merely guess (.25). This would then make the Ho: Pr = .25 and Ha: would be Pr * .25.2.Determine level of significance. Is it a one-tail or two tail test?:I decided to make a = .05 for the test, which was only a one-tailed test because Pr must be greater than .25.3.Choose a Test Statistic I used the formula for a sample proportion versus a known standard. P was .25.4. Determine a Critical ValueUsing .05 as a, the critical value used was 1.64.5. Calculate the Test Statistic Pr = .42 which resulted in the test statistic being 1.21, which is lower than the critical value of 1.64. Therefore, the null hypothesis would be accepted. Critique It has been thought that psychic ability is not present in everyone. And, interestingly enough, one of the subjects tested scored significantly better than the others. For him, Pr = .59, making the test statistic 1.42.There were a couple of factors that might have aided in causing the sample to be biased. The type of sampling that was used was a forced-choice type. For this reason, the subjects probably got a higher percentage of cards right because they only had four choices to choose from. I also noticed that as the study went on, the subjects would begin to get more cards right. Perhaps, a warm-up was required to get the mind flowing, instead of going right to the sample. The experiment had several variables involved. The explanatory variable was the psychic ability used to identify the card correctly. This variable could have been manipulated by several factors. The fact that the brain might not have been warmed-up when the experiment started has been discussed, but some of the subjects may have become tired or bored in the latter stages of the experiment. These factors also likely influenced the response v...
