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
1>-7 is the answer hope it helps you
0.1(71x+33)
the soultion is
Answer: 53.65
Step-by-step explanation
First you need to write out the equation
37 x .45 = 16.65
Then you take 16.65 which is the percent mark up and add it to the original price of $37 and you get your answer of 53.65
Answer:
Step-by-step explanation:
Look at the picture.
The formula of a slope:
The point-slope form of an equation of a linear function:
We have two points (1, 4) and (-3, 6). Substitute:
