Need answer with steps for number 6

Use a 0.01 significance level to test the claim that the sample is from a population with a mean less than 1000 hic, Do the results suggest that child booster seats meet the specified requirement? DATA: 774, 649, 1210, 546, 431, 612 6. A recently televised broadcast of 60 minutes had a 15 share, meaning that among 5000 monitored households with TV sets in use, 15% of them were tuned to 60 minutes. Use a 0.05 significance level to test the claim of an advertiser that among the household with TV sets in use, less than 20% were tuned to 60 minutes. 7. In a poll of 745 randomly selected adults, 591 said that it is morally wrong to not report all income on tax returns. Use a 0.01 significance level to test th claim that 75% of adults say that it is morally wrong to not report all income on tax returns. 8. A survey of 61,647 people included several questions about office relationships. Of the respondents, 26% reported that bosses scream at employees. U