11 A somple of 114 mortgages approved during the current year showed that 31 were issued to a single-earner family or Individual. The historical percentage is 23 percent At the 05 level of...

Extracted text: 11 A somple of 114 mortgages approved during the current year showed that 31 were issued to a single-earner family or Individual. The historical percentage is 23 percent At the 05 level of significance in a right-tailed test, has the percentage of single-earner or individual mortgages risen? Ents (a-1) H S 23 versus H> 23. Choose the right option a Reject H, f zcanc 1645 b. Reject H if zcale1645 eBook References (a-2) Colculete the test statistic. (Round intermediate calculations to 2 decimal places. Round your answer to 4 decimal places.) Test statistic (e-3) The null hypothesis should be rejected. O True False (b) is this a close decision OYes No


Extracted text: 12 The historical on-time percentage for Amtrak's Sunset Limited is 10 percent In July, the train was on time 0 times in 31 runs. Hint Use Excel to calculate the cumulative binomial probability AXs0in = 31, =10) Assume a=1. (a) Choose the correct null ond alternative hypotheses. sts a Ha 2 10 versus H 10. Reject Hg if P< 10="" b.="" h="" 2="" 10="" versus="" h="">< 10.="" reject="" ha="" if="" p=""> 10 eBook ofarancos (b) Find the probability. (Round your answer to 4 decimal places.) AX= 0) (c-1) We can reject the null hypothesis. Yes O No (e-2) Has the on-time percentage fallen? Yes ONo