Helen buys a fleet of taxi's for her new business. The bank lends her £300 000 and she uses this money to buy the taxis which cost £23 400 each
a) how much taxis can she buy
b) how much of the loan will be left over.
Please help guys ​

(b) suppose that consolidated power decides to use a level of significance of α = .05, and suppose a random sample of 100 temperature readings is obtained. if the sample mean of the 100 temperature readings is x⎯⎯ = 60.990, test h0 versus ha and determine whether the power plant should be shut down and the cooling system repaired. perform the hypothesis test by using a critical value and a p-value. assume σ = 5. (round your z to 2 decimal places and p-value to 4 decimal places.)