Consider the following hypotheses: Ho: μ-470 BA: 470 The population is normally distributed with a population standard deviation of 44. (You may find it useful to reference the appropriate table: z table or ttable) a-1. Calculate the value of the test statistic with x = 483 and n=65. (Round final answer to 2 decimal places.) Test statistic 2.38 a-2. What is the conclusion at the 10% significance level? O Do not reject H since the p-value is greater than the significance level. O Do not reject # since the p-value is less than the significance level. Reject H since the p-value is greater than the significance level. O Reject since the p-value is less than the significance level.
a-3. Interpret the results at a = 0.10. OWe cannot conclude that the population mean differs from 470. OWe conclude that the population mean differs from 470. We cannot conclude that the sample mean differs from 470. We conclude that the sample mean differs from 470. b-1. Calculate the value of the test statistic with x = 438 and n= 65. (Negative value should be indicated by a minus sign. Round final answer to 2 decimal places.) Test statistic b-2. What is the conclusion at the 5% significance level? O Reject o since the p-value is greater than the significance level. O Reject o since the p-value is less than the significance level. O Do not reject # since the p-value is greater than the significance level. Do not reject o since the p-value is less than the significance level.
b-3. Interpret the results at a = 0.05. O We conclude that the population mean differs from 470. OWe cannot conclude that the population mean differs from 470. O We conclude that the sample mean differs from 470. We cannot conclude that the sample mean differs from 470.
Join a community of subject matter experts. Register for FREE to view solutions, replies, and use search function. Request answer by replying!