5. The State of Maryland is studying if a program to help homeowners with \"underwater" mortgages is needed. A subcommittee has determined that a random sample of homeowners will be conducted. If it can be shown that with 95% condence that the proportion of underwater mortgages is over 10%, then the issue will be studied further. A sample of 250 homeowners is conducted and nds that 39 of those mortgages are underwater. Calculate a 95% condence interval around the estimate and determine if the issue will or will not be studied further. [5 pt) 6. California has (just this year) initiated a carbon offset program as part of their California Climate Initiative. A landowner can get carbon credits for the biomass in their trees on a particular tract of land provided they can prove their estimate of the mean biomass density is within 10 Mg/ ha at a 95% condence level (Mg is one million grams, and hectare (ha) is 100 m x 100 m). A landowner does a preliminary sample of 10 plots and comes up with an estimate for sample standard deviation of about 50 Mg/ha. How many plots will she need to meet the above criterion? (5 pt)