(1 point) The senior vice-president of marketing for North American hotel chain believes that the company's recent advertising of their hotels has increased the mean occupancy rate at all their hotels. The occupancy rate is measured by the percentage of hotel rooms that are occupied. To test this hypothesis, ten cities were randomly selected and the occupany rate on a randomly selected weekday three weeks prior (hut and; three weeks after the start of the advertising campaign were recorded. The data is given in the table below. City Before After Vancouver 86 88 Toronto 92 94 Kansas City 83 97 Halifax 88 99 Charlotte 79 89 Dallas 81 93 Boston 90 92 Winnipeg 76 98 Calgary 80 89 Montreal 91 90 (a) Choose the correct statistical hypotheses. O A. HO : HD = 0 HA : HD 0 O E. HO : HD = 0, HA : UD # 0 OF. Ho : HD = 0, HA : HD > 0 (b) Determine the value of the test statistic for this test, use two decimals in your answer. Test Statistic = (c) Determine the P-value for this test, to three decimal places. P (d) Based on the above calculations, we should ? the null hypothesis. Use a = 0.05.{e} 1Il'ilhat condition must hold in order for your decision in (c) to have statistical meaning? 0 A. The 1vacancy-rates at each hotel both before and after the marking campaign are normally disthbuted. {3} E. The difference in the vacancy-rates before and after the marketing campaign at each hotel are normally.r distributed. {3: c. The vacancy-rates at each hotel before the marking campaign are normally,r distributed. 0 D. The 1uracancgr-ratee at each hotel after the marking campaign are normally.r distributed