Answer:
At least 11 miles a day.
Step-by-step explanation:
(80-14)÷6≥80
Tan(35)=x/12
.7=x/12
12*.7=x
x=8.4
Answer:
plot (0,7) then move up 2 because it's positive and keep going up and down the same amount then put the line
Answer:
70.06
Mean score = 70
Step-by-step explanation:
16% of students scored higher than 80 on a recent normally distributed exam the standard deviation is 10 what is the mean
For a normal distribution :
Zscore = (x - mean) / standard deviation
x = score
P(Z > 80) = 16% = 0.16 ; corresponding Zscore = 0.994 (Z probability calculator)
Therefore ;
0.994 = (80 - mean) / 10
0.994 * 10 = 80 - mean
9.94 = 80 - mean
Mean = 80 - 9.94
Mean = 70.06
Hence, the mean score = 70.06 = 70
Answer:
Im pretty sure its A
Step-by-step explanation:
