A researcher is interested in weather a certain protein supplement has an effect on muscles mass. Which of the following statements is true?

A researcher is interested in whether a certain protein supplement has an effect on muscle mass. Please use a significance level of 5%. > t. text(x, alternative = "two. sided", mu = 78) One Sample t-test data: x t = -1.7055, df = 11, p-value = 0. 1161 alternative hypothesis: true mean is not equal to 78 95 percent confidence interval: 58. 72120 80. 44546 sample estimates: mean of x 69.58333 Which of the following is true? O The null hypothesis is that the protein supplement has an effect on muscle mass. Because the 95% confidence interval includes 78, you would fail to reject the null hypothesis. This is a one-tailed greater than test. The alternative hypothesis is that the protein supplment has no effect on muscle mass