An estimate from a bus company is that young adults took 4.5 Uber rides

An estimate from a bus company is that young adults took 4.5 Uber rides each year. A student randomly polls 30 young adults and finds that these young adults have taken an average of 4.5 Uber rides each year with a standard dev of 1.2 rides. i) With significan level of 0.05 , do the test claim (Ho, Ha, critical value(s), test statistic , p-value, conclusion). ii) Come up with your own confidence level that is equivalent to the significant level of 0.05. iii) find confidence interval to estimate the population means with confident level from part ii. iv) interpret the result from the confidence interval