What is the standard deviation perceived life satisfaction of older adults?*8.548.6828.144.5None of the above

What is the mean perceived life satisfaction of older adults?*8.548.6828.144.5None of the above

A research study was conducted to examine the differences between older and younger adults on perceived life satisfaction. A sample of ten older adults (over the age of 70) and ten younger adults (between 20 and 30) were give a life satisfaction test (known to have high reliability and validity). Scores on the measure range from 0 to 60 with high scores indicative of high life satisfaction; low scores indicative of low life satisfaction. The data are presented below. Compute the appropriate t-test. Older Adult                 Younger Adult       45                                   34      38                                    22      52                                    15      48                                    27      25                                    37      39                                    41      51                                    24      46                                     19     55                                     26     46                                     3626.   What would be the null hypothesis in this study?*There is no significant relationship in the perceived life satisfaction between older and younger adult?There is a significant relationship in the perceived life satisfaction between older and younger adult?There is no significant difference in the perceived life satisfaction between older and younger adult?There is a significant difference in the perceived life satisfaction between older and younger adult?None of the above

Below is a table showing data collected from a population. 12151342981622161612 Calculate the standard deviation.5.375.6211.256.26None of the above

Heights of People (m)The number of standard deviations from the mean is also called the "Standard Score","sigma" or "z-score"how many standard deviations 1.85 is from the mean ????????How far is 1.85 from the mean?

If you learn that your score on an exam was 81 and the mean was 69, would you be more satisfied if the standard deviation was 6 or if it was 15?