can you please help me with these two questions

One-Sample T: Weight (kg) Descriptive Statistics 95% Upper Bound N Mean StDev SE Mean for 12 99.58 9.53 2.75 104.52 px population mean of Sample Test Null hypothesis He p = 105 Alternative How * 105 hypothesis T-Value P-Value -1.97 0.037 6) In 1965 a nationwide survey revealed that U.S. grade school children spent an average of 8.4 hours per week doing homework. Assume the distribution of homework times is normal. Last year a sample of 56 students were given the same survey. For this sample, the average number of homework hours was 7.5 hours with a standard deviation of 2.1 hours. Test to determine if there is a differe Let a = 0.10. Show all seven steps. 7) A tire manufacturer has been producing tires with an average life expectancy of 26,G00 miles. Now the company is advertising that their new tires' life expectancy has increased. In order to test the legitimacy of their advertising campaign, an independent testing agency tested a sample of 85 of their tires. The agency found the mean of the 85 tires to be 27,000 miles and the standard deviation to be 3,970 miles. Use a 0.01 level of significance and test to determine whether the company is using legitimate advertising. (Show all seven steps.)