3. a random sample of 100 records in a us city during the past year showed an average life span of 71.8 years. a. assuming normality and a population standard deviation of 8.9 years, does this seem to indicate that the mean life span today is not different than 70 years ? use a 0.10 level of significance and write hypothesis testing steps explicitly. b. find the p-value that corresponds to the test statistic. would you reject h0 by using the p-value? why ?

multiple all that

step-by-step explanation:

27×17

$655.61 which is option c

step-by-step explanation:

price of house =   $146,000

initial rate = 3.5%

mortgaged paid in this = 3.5 % of $146,000

                                        =

                                        =$5110

the total years would be = 7

total mortgaged paid = 7 * $5110

                                      =$35770

remaining money = $146000-35770

                                =$110230

new mortgaged payment = 5 % of 110230

                                            =  

                                            =$655.61