48. A poll of 250 people shows the supporting rates of two candidates of the state congress: - candidate A: 28.3%±3%; c

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48. A poll of 250 people shows the supportingrates of two candidates of the state congress: - candidate A:28.3%±3%; candidate B: 32.1%±3%.
a) Can we conclude that candidate B’s realsupporting rate is higher than candidate A in the population of thestate (or can we reject the hypothesis that the two candidates’supporting rates in the population are same)? Why? (Show your calculations and arguments)
b) If the supporting rates of a poll show28.5%±2% for A and 32.7%±2% for B, can we conclude B’s supportingrate is higher in the population? Why? (Show yourcalculations and arguments).
Urgent*Please solve with a step-by-step solution/excelformula!