Household weekly spending at Coles data collected from 200 families in Sydney had the sample mean $158 with a sample standard deviation of $18. Conduct a hypothesis test at a 5% significance level, to test if the average weekly spending at Coles in Sydney different from $155. Use this P-value = 0.019 to address the research statement.

Is the average weekly spending at Coles in Sydney different form $155?

Be sure to include the following in your answer:

- the null and alternative hypothesis

- p-value

- decision

- conclusion