= Listen Conduct a hypothesis test: For the past several years, the mean number of people in a household has been declining. A social scientist believes that in a certain large city, the mean number of people per household is less than 2.5. To investigate this, she takes a simple random sample of 150 households in the city, and finds the sample mean number of people is 2.3 with a standard deviation of 1.5. Can you conclude that the mean number of people per household is less than 2.5? Use a confidence level of 99% or .01 significance. Round your answersto 2 decimal places. What is the p-value? 9