April 2013 to April 2014 taxable income = gross income - personal allowance
.
personal allowance is £9205
basic rate of tax: 20% on the first 232 255 of taxable income
higher rate tax 40% is payable on all taxable income over £32255
.
During the tax year 2013 to 2014. Claudia's gross income was £52250
Calculate the total amount of tax that Claudia should pay
You must show al your working

An automobile assembly line operation has a scheduled mean completion time, μ, of 12 minutes. the standard deviation of completion times is 1.6 minutes. it is claimed that, under new management, the mean completion time has decreased. to test this claim, a random sample of 33 completion times under new management was taken. the sample had a mean of 11.2 minutes. assume that the population is normally distributed. can we support, at the 0.05 level of significance, the claim that the mean completion time has decreased under new management? assume that the standard deviation of completion times has not changed.