Extracted text: A McGraw Hill ALEKS Business A ALEKS - Jessica Burgos - Learn www-awu.aleks.com/alekscgi/x/Isl.exe/1o_u-IgNslkr7j8P3jH-lv-Y-mBdRDk1FzbOsPOIMQwqFYZIN5rXLxPuQc57ibDxPviTFh5CDqDDANh_5pKCng8cfOV3LJj7hU7404HgKOMTA3ts3sYh?10BW7QY||E O CONFIDENCE INTERVALS AND HYPOTHESIS TESTING Hypothesis test for the difference of population means: Z test Je Past records suggest that the mean annual income, u,, of teachers in state of Connecticut is less than or equal to the mean annual income, u, of teachers in California. In a current study, a random sample of 15 teachers from Connecticut and an independent random sample of 15 teachers from California have been asked to report their mean annual income. The data obtained are as follows: Annual income in dollars Connecticut 48744, 40768, 48402, 56789, 42113, 51354, 49991, 42103, 60189, 57126, 47082, 43378, 55693, 52235, 37737 California 47631, 56080, 48465, 56551, 43139, 41467, 46953, 44628, 52301, 41674, 47320, 44838, 43941, 47110, 39887 Send data to calculator v Send data to Excel The population standard deviation for mean annual income of teachers in Connecticut and in California are estimated as 6300 and 6100, respectively. It is also known that both populations are approximately normally distributed. At the 0.01 level of significance, is there sufficient evidence to reject the claim that the mean annual income of teachers in state of Connecticut is less than or equal to the mean annual income of teachers in California? Perform a one-tailed test. Then fill in the table below. Carry your intermediate computations to at least three decimal places and round your answers as specified in the table. (If necessary, consult a list of formulas.) The null hypothesis: 合 The alternative hypothesis: The type of test statistic: (Choose one) v OSO O
Extracted text: HYPOTHESIS TESTING Hypothesis test for the difference of population means: Z test KITOWIT mean a. Then fill in the table below. OLT populations are dpproxmately iormanY UIstributeU. At the v.AUTTEver o SigicantE, IS Cheres income of teachers in state of Connecticut is less than or equal to the mean annual income of tea Carry your intermediate computations to at least three decimal places and round your answers as specified in t The null hypothesis: The alternative hypothesis: The type of test statistic: |(Choose one) v D=0 OSO O