7.1. A researcher is using an independent-measures design to compare two treatment conditions with n = 8 participants in each treatment, and the results are evaluated using a two-tailed hypothesis test with ? = .05.a. What is the critical value for t?b. If a t statistic of t = 1.83 was obtained from the analysis, is this sufficient to reject the null hypothesis? Explain.c. If a one-tailed hypothesis test was used instead of a two-tailed test, would t = 1.83 be sufficient to reject null hypothesis (? = .05)? Explain.