Answer Happy

18. The weights of woekly plastic waste from a random sample of 50 American households resulted in a mean of 191 pounds. You may assume the population standard deviation is 1.07 pounds. Test the hypothesis that the mean weekly plastic waste is greater than 18 pounds at the 5% level of significance. (8 points - be sure to include all steps)

A random sampleſ of 40 cars on I-10 in Baton Rouge resulted in a mean speed of 68.4 miles per hour. This information is to be used to test if the mean speed of all cars in Baton Rouge is greater than the posted speed limit of 65 miles per hour. Identify the following from this scenario: the population the sample the value of the statistic: the value of the parameter