Answer:
85%
Step-by-step explanation:

What I did here was multiply 34/40 by 100 to get 3400/40 or 85%.
Answer:
y=8x+7
Step-by-step explanation:
Use the form y=mx+b
M= the slope
B= the y-intercept
y=8x+?
Since the y coordinate of (0,7) is 7
b=7
So y=8x+7
For 39% of all observations that are greater than z on the normal distribution table, the percentage of observations that are lesser than z is
100 - 39 = 61%
The proportion is 61/100 = 0.61
From the normal distribution table, the value of z corresponding to this proportion is 0.28
Thus, the required value of z is 0.28
Answer:
125
Step-by-step explanation:
All the work is in picture attat