The work week for adults in the US that work full time is normally distributed with a mean of 47 hours. A newly hired engineer at a start-up company believes that employees at start-up companies work more on average then most working adults in the US. She asks 12 engineering friends at start- ups for the lengths in hours of their work week. Their responses are shown in the table below. Test the claim using a 10% level of significance. Give answer to at least 4 decimal places. Hours 48 43 54 55 48 67 51 56 45 48 51 51 What are the correct hypotheses? Ho: H 47 hours Hy : H 47 hours Based on the hypotheses, find the following: Test Statistic= p-value=Question 6 Score on last try: 0.45 of 1 pts. See Details for more. > Next question Get a similar question You can retry this question below Test the claim that the mean GPA of night students is smaller than 3.4 at the 5% significance level. The population standard deviation for this group is known to be 0.08. The null and alternative hypotheses for this test are: Ho : M 2 3.4 Ho: M 3.4 O The test is: right-tailed left-tailed ON V O Based on a sample of 34 people, the sample mean GPA was 3.37. Hint: Before you find the p-value below, calculate the test statistic to two decimal places. The p-value is: (to 4 decimals) The significance level as a decimal is:Question 3 Score on last try: 0.82 of 1 pts. See Details for more. > Next question Get a similar question You can retry this question below The weights of newborn children in the United States vary according to the normal distribution with mean 7.5 pounds and standard deviation 1.25 pounds. An article in the The Wall Street Journal claims that the average birth weight is decreasing over time. Steady Decline A local hospital wanted to see if the claim was true and randomly Change in the average birth sampled 23 baby's weights and found an average weight of 7.2 weight of babies" born in the U.S. since 1990, in ounces pounds. Test the claim using a 1% level of significance that the mean weight significantly smaller than the national average of 7.5 pounds. Use the population standard deviation of 1.25 pounds. Give answer to at -0.5 least 4 decimal places. -1.0 What are the correct hypotheses? (Select the correct symbols.) -1.5 -2.0 prefergreet Ho: H 7.5 pounds 1990 '95 00 '05 *Born between 37 and 41 weeks and not induding multiple births H1 : H AY 7.5 v . pounds Source: Obstetrics and Gynecology Based on the hypotheses, find the following: Test Statistic = p-value =X Question 7 Score on last try: 0 of 1 pts. See Details for more. > Next question Get a similar question You can retry this question below A researcher has boiled her hypothesis test down to the following information. Ho: u = 41, Ha: M > 41, a = 0.04 x = 41.7076, s = 5.3852, n = 21 Find the p-value. Submit