A gas company president for a particular city is interested in the proportion of homes heated by gas. Historically, the proportion of homes heated by gas has been 0.65. A sample of 75 homes was selected and it was found that 44 of them heat with gas.

a) find a 95% confidence interval for the proportion of houses heated with gas

b) Does the above interval indicate that the proportion of houses heated with gas is still 0.65?

Answer rating: 100% (QA)

a Level of Significance a 005 Number of Items of Interest x 44 Sample Size n 75 Sampl... View the full answer