i am not sure how to solve this practice question

36. In problems (a){d), use the twelve method for the hypothesis tests. a) A study to examine how well marital dissolution was predicted by husbands' and wives' personality scam was recently published in the Journal of Mortality and Social Psychology. The mean rating on a scale for \"neuroticisrn\" for wives in stable marriages was 19.43. Do wives in unstable marriages differ? A random sample of 64 wives in unA stable Inarriages had a man score of 29.85 with a standard deviation of 24.17. Test the hypothesis that wives in unstable marriages have a neuroticism rating greater than 19.43. Use the .01 level of signicance. b) Transcutaneous electrical nerve stimulation (TENS) devices are equentlyused in the management of acute and chronic pain. An important oomponent of the TENS system is the skin electrode. A study reported in the Journal qukysical' Therapy was made to de~ termine conductive differenms among electrodes used with TENS denes. A random sample of 11 electrodes in the low-impedance group produced impedance measures (in ohms) of 1.200 1.200 1,000 1.600 1.400 1,400 1.200 1.700 1.600 1.300 1.600 Assuming a population of normally distributed values, test the hypothesis that the pop- ulation mean impedance measure for all such electrodes is 1,400. Use the .05 level of sig- nicance. c) Normal subjects have a mean of 46.3 on the Stroop ColorWord Test. A study of 32 rstepisode schizophrenic patients reported in the American Journal ofPsychiany had a mean of 32.78 and standard deviation of 10.8 on this test. Test the hypothesis at the .05 level that the population mean score for rst-episode schizophrenic patients on this test is 46.3