Chrome File Edit View History Bookmarks People Tab Window Help $ 82% Tue 3:09 PM Q DE ... Bb Pearson's MyLab & Mastering - X Do Homework - Sumeeha Jami X Course Hero * *Homework Help - Q&A from Or x + C mathxl.com/Student/PlayerHomework.aspx?homeworkld=567752927&questionld=3&flushed=false&cld=6040433&back=https://www.mathxl.com/Student/DoHomework.... MATH 1635-NET10, Statistics, 2020SU Sumeeha Jamil & | 07/14/20 3:09 PM Homework: Section 9.2 Homework Save Score: 0.13 of 1 pt 3 of 7 (7 complete) HW Score: 46.43%, 3.25 of 7 pts x 9.2.5-T Question Help Data on the weights (lb) of the contents of cans of diet soda versus the contents of cans of the regular version of the soda is summarized to the right. Assume that the two Diet Regular samples are independent simple random samples selected from normally distributed populations, and do not assume that the population standard deviations are equal Complete parts (a) and (b) below. Use a 0.01 significance level for both parts. Hy H2 n 22 22 X 1 0.78881 lb 0.80839 lb S .00441 lb 0.00754 lb a. Test the claim that the contents of cans of diet soda have weights with a mean that is less than the mean for the regular soda. What are the null and alternative hypotheses? A. HO: H1 = H2 OB. HO: H1 # H2 H1: My H2 The test statistic, t, is . (Round to two decimal places as needed.) Enter your answer in the answer box and then click Check Answer. ? 4 parts remaining Clear All Check Answer JUL 14 o P WChrome File Edit View History Bookmarks People Tab Window Help 82% Tue 3:10 PM Q DE ... Bb Pearson's MyLab & Mastering - X Do Homework - Sumeeha Jami X Course Hero * *Homework Help - Q&A from Or x + C mathxl.com/Student/PlayerHomework.aspx?homeworkld=567752927&questionld=3&flushed=false&cld=6040433&back=https://www.mathxl.com/Student/DoHomework.... MATH 1635-NET10, Statistics, 2020SU Sumeeha Jamil & | 07/14/20 3:10 PM Homework: Section 9.2 Homework Save Score: 0.13 of 1 pt 4 of 7 (7 complete) HW Score: 46.43%, 3.25 of 7 pts x 9.2.7-T Question Help Proctored Nonproctored A study was done on proctored and nonproctored tests. The results are shown in the table. Assume that the two samples are independent simple random samples selected from normally distributed populations, and H2 do not assume that the population standard deviations are equal. Complete parts (a) and (b) below. Use a 0.05 significance level for both parts. 30 34 X 78.38 86.52 S 10.66 19.01 a. Test the claim that students taking nonproctored tests get a higher mean score than those taking proctored tests. What are the null and alternative hypotheses? O A. HO: H1 = H2 OB. HO: H1 # H2 H1 : 1 1 > H2 H1: My H 2 H1 : 1 1 > H 2 O C. HO: H1 = H2 OD. HO: M1 = H2 H1: 1 1 > H2 Hy: My # H2 Medium Lead Level @ High Lead Level 72 82 n2 = 11 92 85 X2 = 87.842 84 97 $2 = 10.153 83 92 99 111 91 Print Done Click to select your answer and then click Check Answer. ? 5 parts remaining Clear All Check Answer JUL 14 o P EO WChrome File Edit View History Bookmarks People Tab Window Help 80% Tue 3:19 PM Q DE ... Bb Pearson's MyLab & Mastering - X Do Homework - Sumeeha Jami X Course Hero * *Homework Help - Q&A from Or x + C mathxl.com/Student/PlayerHomework.aspx?homeworkld=567752927&questionld=3&flushed=false&cld=6040433&back=https://www.mathxl.com/Student/DoHomework.... MATH 1635-NET10, Statistics, 2020SU Sumeeha Jamil & | 07/14/20 3:19 PM Homework: Section 9.2 Homework Save Score: 0.14 of 1 pt 6 of 7 (7 complete) HW Score: 48.47%, 3.39 of 7 pts x 9.2.19-E Question Help Listed below are time intervals (min) between eruptions of a geyser. Assume that the "recent" times are within the past few years, the "past" times are from around 20 years ago, and that the two samples are independent simple random samples selected from normally distributed populations. Do not assume that the population standard deviations are equal. Does it appear that the mean time interval has changed? Is the conclusion affected by whether the significance level is 0.10 or 0.01? Recent 79 91 89 78 57 100 63 87 71 88 81 84 57 82 74 102 62 Past 89 87 93 94 63 86 86 92 86 91 89 91 Let u be the recent times and let u2 be the past times. What are the null and alternative hypotheses? O A. HO: My H 2 Hy : My = H 2 Click to select your answer and then click Check Answer. ? 4 parts remaining Clear All Check Answer JUL 14 o P W
