Answer:
34
Step-by-step explanation:
(2.34/ 7.89) times 100 = ˜29.65%
Since 68% of the sample ranges from the plus minus first standard deviation from the mean, then interval wherein it will occur will be between 53.5% to 60.5%. I got this answer through adding and subtracting one standard deviation (3.5) from the mean (which is 57).
7n = n
If that is incorrect, then i am sorry