H m llliu t, m: NWP Assessment Player ui Application , , , c 6 New Assignment 8 Question 4 of 10 _ /1 EE Current Attempt in Progress A bank manager wants to know the mean amount of mortgage paid per month by homeowners in an area. A random sample of 110 homeowners selected from this area showed that they pay an average of $1577 per month for their mortgages. The population standard deviation of such mortgages is $211. 3. Find a 97% condence interval for the mean amount of mortgage paid per month by all homeowners in this area. Round your answers to two decimal places. I l to l dollars eTextbook and Media b. Suppose the condence interval obtained in part a is too wide. Select all of the ways the width of this interval can be reduced. [3 Lowering the sample size C] Increasing the condence level C] Increasing the sample size C] Lowering the condence level