I just want to see if I'm doing this study sheet correctly. Thanks in advance

1) Information about heart rates (beats per minute) of adults in a gym was collected. Estimate the mean heart rate of the group Heart rate (bpm) f 50 - 60 9 60 - 70 31 70 - 80 45 80 - 90 20 2) Group A is a group of 50 people with an average height of 5feet inches and a standard deviation of 7 inches. Group B is a group of 50 people with an average height of 5feet 6inches and a standard deviation of 4inches. From which group would you be more likely to randomly select a person that is 6 feet tall? Explain your answer in a couple of sentences. 3) At the end of some semester a certain student received the grade report shown below. If the school uses the A = 4.0, B=3.0, C=2.0, D=1.0 and F=0.0 grade point system (just like OCC does) Determine the students GPA for that semester. Course/credits Semester Grade English (3credits) B Physics (4 credits) C Philosophy (3 credits) A Art History (3 credits) B 4) Consider the following table of data that shows the results of asking a group of people about yearly income: $20,000 - 29,999 $30,000 - 39,999 $40,000 - Totals 49.999 Male 49 80 127 256 Female 47 97 93 237 Totals 96 177 220 493 i) Determine the probability that one randomly selected person from the group is a female that earns between $30,000 and $39,999 5) The mean test score for a history test is 63 with a standard deviation of 9. The mean test score for a chemistry test is 23 with a standard deviation of 4. A student got a 66 on the history test and a 26 on the chemistry test, use Z-scores to determine the relative performance on each test. On which test did the student perform better, and why? 6) Construct a Box and whisker plot for the data below 11 13 13 17 24 25 26 28 33 36 36 36 42 47 53 57 61 O A