Answer Happy

CASE 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 上 48 49 50 EDUCATION 6 14 16 9 10 12 16 18 11 12 14 16 16 12 12 12 16 12 10 14 12 18 14 12 18 12 12 14 14 14 12 14 18 12 14 16 9 16 16 16 14 12 16 10 18 14 18 ·0462 14 16 12 T RACE white white white white white white white non-white white white -white white white white white white white white white non-white white white non-white non-white white white white white non-white white white white white white white white white white white white white white white white non-white white white non-white white white . HOUSEHOLD INCOME $40,000+ $40,000+ $40,000+ <$19,000 $19,000-$39,999 <$19,000 $40,000+ $40,000+ $40,000+ $40,000+ $40,000+ $19,000-$39,999 $19,000-$39,999 <$19,000 <$19,000 $40,000+ $40,000+ $19,000-$39,999 $40,000+ $40,000+ <$19,000 $40,000+ $40,000+ <$19,000 $40,000+ $19,000-$39,999 <$19,000 $40,000+ <$19,000 $40,000+ <$19,000 $40,000+ $40,000+ $19,000-$39.999 <$19,000 $40,000+ $40,000+ $40,000+ $40,000+ <$19,000 $19,000-$39,999 $40,000+ $40,000+ <$19,000 $40,000+ <$19,000 $40,000+ $40,000+ $19,000-$39.999 $40,000+ 4 2 2 HOURS 1 4 4 1 3 4 3 2 2 2 1 2 3 3 2 3 3 2 1 1 3 4 1 3 8 4 2 4 3 2 1 3 1 2 1 2 1 4 1 2 4 2 3 2 4 4 4
Education: y = 13.70, s = 2.27 Hours Spent on Social Media: y = 2.60, s = 1.34
7. Test the following hypotheses a. You know that the average number of years of education for the national population is 12.5 years, with a standard deviation of 1.5 years. You hypothesize that the sample's average number of years of education is different from the national population's average. What type of hypothesis test would this require, one-tailed or two-tailed? In proper notation, what would the null hypothesis be? In proper notation, what would the research hypothesis be?__ To test this hypothesis would you use a Z or a t test? What is the test statistic (include degrees of freedom if necessary)?
Assuming an alpha of .05, what is the p- or critical value needed to reject the null hypothesis? What is your conclusion? b. You know the average number of hours spend on social media per day for the population is 1, but don't know the standard deviation. You hypothesize that your sample spends more hours on social media per day than the national population. What type of hypothesis test would this require, one-tailed or two-tailed? In proper notation, what would the null hypothesis be? In proper notation, what would the research hypothesis be? To test this hypothesis would you use a Z or at test? What is the test statistic (include degrees of freedom if necessary)? Assuming an alpha of .05, what is the p- or critical value needed to reject the null hypothesis? What is your conclusion and interpretation?