Question

need help with statistics and two tailed and one tailed t tests. will post question in comments.

Answer 1

The local conservation group surveyed a random sample of 311 households in Portsmouth. They found that the average household kept the thermostat set to a winter daily average of 70.2 degrees (Fahrenheit) with a standard deviation of 3.4 degrees. The conservation group advocates that households keep their thermostats at an average temperature of 68 degrees. If the residents of the city are, on average, in keeping with this suggestion, then the group will not need to continue to do community outreach; if, however, the residents in town are setting their thermostats significantly higher than 68 degrees, then the
group will plan more education efforts.

1. select the appropriate statistical test to assess whether the conservation group will need to continue their efforts. state why appropriate
b. perform the stat test you selected.