A random sample of size n = 9 will be taken from Y~N(H,0 = 24) where u is unknown. The following hypothesis test will be conducted: Ho: µ = 145 Ha: u > 145

Consider a population of values described by  X ~ N(20, 92) For a specific sample of size n = 15, we have X-bar = 22.4.  Find the Z-score for the X-bar value.

Use the information in the table below to answer the question. In = 15 SSXY = 285.2 beta0_hat = 36 SSxx = = 23 beta1_hat = 12.4 S = 7 If we wish to perform a hypothesis test for Ho: B1 = 0 with alpha = 0.05, what critical value from the t-table should be used for the rejection region? 2.718 2.447 1.740 2.160

The test statistic for testing Họ: u = 100 against Ha: u z 100 was t = 3.3, with P-value 0.001. Which of the following is the appropriate conclusion? Since the P-value is very small, we are unable to conclude that u = 100. In order to interpret the results, we must first know the sample size. Since the P-value is very small, we conclude that µ ± 100. Since the P-value is very small, we are unable to conclude that u # 100. Since the P-value is very small, we conclude that u = 100.