6	A community college wants to estimate the proportion of students who are active in student government. A random sample of 224 studentsshowed 56were active in student government. Create a confidence interval at 90% confidence for the proportion of all students in that college who were active in student government.
7	You wish to estimate the mean length of adults of a certain species of fish. A sample of 200 adult fish shows a sample mean= 40 cm and sample standard deviation s = 3 cm. Create a confidence interval at 95% confidence for the population mean length.
8	The weights of adult female deer (does) in Mesa Verde National Park are normally distributed with population mean = 139 pounds with population standard deviation = 15 pounds. A biologist weighs a random sample of 25 female deer. What is the probability that the sample mean () is less than 132 pounds?
9	Assume that 25% of all households in Santa Clara county have a burglar alarm (population characteristic). A random sample of 200 Santa Clara county households is taken. What is the probability that between 20% (0.2) to 30% (0.3) of the households in the sample have a burglar alarm?
10	A 911 emergency phone line wants to estimate the proportion of calls that are not emergencies. A random sample of 300 calls showed that 90 were not emergencies. Create a confidence interval at 95% confidence for the proportion of all calls which are not emergencies