can u do it plz

(a) Table Q3(a) is the hardness of sisal fibre polypropylene composite that is normally distributed, recorded by a group of final year students for their project. Table Q3(a) Hardness of sisal polypropylene composite (BHN) 3.6 3.3 3.2 2.5 3.0 2.7 2.8 3.2 Construct a 98% confidence interval for the true mean hardness of all sisal fibre polypropylene composite. [5 marks] (b) Due to the Covid-19 pandemic, a pharmaceutical company claims that on average, the company produces a minimum of 1500 pieces of surgical face mask per day with a standard deviation of 46.7 pieces of mask. In a random sample of 45 days, the company produced a mean of 1485 pieces of surgical face mask. By using the p-value approach at a 2.4% significance level, do you agree with the claim