He arena has come to an agreement with the Sleaford Rockers to pay them according to this formula: b = tp - (s + 2,000) 3 b is band payment t is ticket sales p is ticket price s is security cost How much will the Sleaford Rockers get paid if they sell 8,000 tickets at £12 each and the security cost is £4,000?

Ur environment is very sensitive to the amount of ozone in the upper atmosphere. the level of ozone normally found is 4.04.0 parts/million (ppm). a researcher believes that the current ozone level is not at a normal level. the mean of 2525 samples is 4.44.4 ppm with a standard deviation of 0.80.8. assume the population is normally distributed. a level of significance of 0.020.02 will be used. make the decision to reject or fail to reject the null hypothesis. answer tables