A researcher wants to investigate the effects of adopting a cat, specifically if participant’s blood pressure decreases after owning a cat. He tests this by measuring seven participant’s blood pressure at night before and after owning a cat. The mean difference between the before and after measurement is 23.4, with a standard deviation of 14. Use a significance level of 0.05.
What is the critical value, test statistic? If the correct response has a positive and negative value, enter the positive value.
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