Please solve this as early as possible:

04. Over the counter medicine purchase has increased because of COVlD-l'). A kids loving organization LoveKids conducted a survey and reported monthly expenses behind over the counter medicine (in dollars) of respondents as bellows. 55 30 40 1'3 25 28 45 16 24 10 Assume that the expenses follow normal distribution. (a) Construct a 98% condence interval for mean monthly expenses behind over the counter 5 medicine and interpret the results. (b) How to reduce the width of a condence interval? 1 (c) How large a sample should be selected so that the estimate with a 90% condence level is 2 within $2 of the population mean