The Global Business Travel Association reported the domestic airfare for business travel for the current year and the previous year. Below is a sample of 12 flights with their domestic airfares shown for both years. Do not round intermediate calculations. Current Year Previous Year Current Year Previous Year 264 303 303 513 507 567 531 339 705 426 690 336 429 489 438 333 699 591 411 207 615 675 249 441 a. Formulate the hypotheses and test for a significant increase in the mean domestic airfare for business travel for the one-year period. Select your answer - v T1 – 11 : 0H 7H – InH : "H What is the p-value? Select your answer - V0 t-yalue (to 3 decimals)

Presidential Inaugural Addresses Ever wonder how many words are in a typical inaugural address? The following data represent the lengths of all the inaugural addresses (measured in word count) for all presidents up to Barack Obama. 1425 1125 1128 5433 2242 2283 3319 2015 3217 135 4467 2308 2906 2821 1172 3967 1337 1883 1668 2406 2217 2480 1807 3634 3838 698 985 559 2978 3318 1355 Source: infoplease.com 1802 1340 1526 2158 4776 1681 4059 996 4388 3801 1087 2446 2130 1507 2463 2449 2170 2546 1729 8445 1571 209 1437 2073 1175

The mean annual salary for nurses is $65,000 with a standard deviation of $7,000.                What is he probability that a randomly selected nurse has a salary less than $60,000?               A random sample of 50 nurses is selected.  What is the probability that the sample mean annual salary is less than $60,000?

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complaint and, if so, whether the complaint was medical or nonmedical in nature. After a year, a tally from these patients was collected to count number who left the HMO voluntarily. Here are the data on the total number in each group and the number who voluntarily left the HMO: No complaint Medical complaint Nonmedical complaint Total A certain health maintenance organization (HMO) wishes to study why patients leave the HMO. A SRS of 423 patients was taken. Data was collected on whether a patient had filed a 177 111 135 Left 64 27 50 If the null hypothesis is Ho : pı = P2 = P3 and using a = 0.05, then do the following: (a) Find the expected number of people with no complaint who leave the HMO: (b) Find the expected number of people with a medical complaint who leave the HMO: (c) Find the expected number of people with a nonmedical complaint who leave the HMO: (d) Find the test statistic: (e) Find the degrees of freedom: (f) Find the critical value: (g) The final conclusion is OA. We…

40 73 152 297 320 536 574 617 650 702 781 844 860 961 Identify the 5 number summary (min, Q1, median, Q3, max)

The price per share of stock for a sample of 25 companies was recorded at the beginning of the first financial quarter and then again at the end of the first financial quarter. How stocks perform during the first financial quarter is an indicator of what is ahead for the stock market and the economy. Company End of 1st quarter Beginning of 1st quarter Bank of New York Mellon 54.19 53.82 Kraft Foods 55.70 77.02 E.I. du Pont de Nemours and Company 102.57 109.00 Consolidated Edison 79.95 83.58 Johnson & Johnson 126.01 139.23 Union Pacific 132.73 135.78 Comcast 32.06 41.07 Applied Materials 50.91 53.04 Pfizer 35.40 36.44 General Electric 14.05 17.98 AT&T 32.54 38.54 Cisco Systems 44.83 38.86 Home Depot 184.63 188.03 JP Morgan Chase 108.78 107.95 Procter & Gamble 71.96 90.65 Verizon 48.82 53.53 Devon Energy 36.20 42.23 Lilly 79.07 84.68 Microsoft 95.00 85.95 Coca Cola 42.59 45.59 Qualcomm 50.82 65.20 Exxon Mobil Corporation 76.95…