Table 1 Average semester book costs: 3. Using table 1, assuming normal distribution, use Excel to calculate: the probability thatis more than $1000 when?= .05 the probability that is $1000 when ? = .05 the probability that is less than or equal to $1000 when ? = .05 Table 1 - Average semester book costs: Using table 1, assuming normal distribution, use Excel to calculate: the probability that µ is more than $1000 when ? = .05 the probability that µ is $1000 when ? = .05 the probability that µ is less than or equal to $1000 when ? = .05 Solution.