Please answer b using R Studio.

A chemist wishes to test the effect of four chemicalagents on the strength of a particular type of cloth. Becausethere might be variability from one bolt to another, thechemist decides to use a randomized block design, with thebolts of cloth considered as blocks. She selects five bolts andapplies all four chemicals in random order to each bolt. Theresulting tensile strengths follow.

A chemist wishes to test the effect of four chemical agents on the strength of a particular type of cloth. Because there might be variability from one bolt to another, the chemist decides to use a randomized block design, with the bolts of cloth considered as blocks. She selects ve bolts and applies all four chemicals in random order to each bolt. The resulting tensile strengths follow. Boll Chemical 1 2 3 4 73 68 74 71 67 73 67 75 72 70 75 68 78 73 68 73 7 l 75 75 69 0! \"LAN- a. Analyze the data from this experiment (use 0.05) and draw appropriate conclusions. b. Suppose that the observation for chemical type 2 and bolt 3 is missing. Analyze the problem by estimating the missing value