Answer:
8.05 miles
Step-by-step explanation:
If it descended 2.2 miles to 5.85 miles then that means it was at 5.85 + 2.2 miles before its descent.
5.85 + 2.2 = 8.05
5.85 + 2.8 = 8.65 (not the answer, but as an example ;b
The standard deviation is 6
The scores of a given test were normally distributed with a mean of 82.
James received a 67 with a z-score of -2.5
Z score = -2.5
Formula :
Hence The standard deviation is 6