The life span at birth of humans has a mean of 89.87 years and a standard deviation of 16.63 years. calculate the upper and lower bounds of an interval containing 95% of the sample mean life spans at birth based on samples of 105 people. give your answers to 2 decimal places.

A local maximum of the function f(x) occurs when x =Step-by-step explanation:

Question 1: <

Question 2: >

Question 3: <

Question 4: <

Step-by-step explanation:

The questions are repeating themselves but I tried to answer. For the first one, -2/3 is less than -1/6 because if you put the same denominator, that is what you get as your answer. Then, for the second one 2/3 is positive so you can automatically know it is greater than a negative fraction. Explanation for the third and fourth problems are the same as the first one.