help please for my exam

3. A manufacturer produces both deluxe and standard models of a home appliance and the selling prices from a sample of retail outlets are as follows: The manufacturer claims that the average retail price differential between the two models is at most $0.85. Conduct a hypothesis test to affirm or deny the manufacturer's claim. Clearly show your hypothesis testing steps (state your null and alternative hypotheses, level of significance, test statistic, etc.) and manual (hand and a calculator) calculations in 2 decimal places