Answer:
Step-by-step explanation:
Answer:
0.33333333333
Step-by-step explanation:
Typing 1/3 in a calculator gives 0.333333333333
Answer: 
Step-by-step explanation:
The Slope-Intercept form of the equation of the line is:
Where "m" is the slope of the line and "b" is the y-intercept.
Find the slope of this line using the formula:
You can say that:
Substituiting values, you get:
Now, you must substitute the slope and any point of the line, into and then you must solve for "b" in order to find its value. You get that this is:
Since the y-intercept is 0, the line passes through the origin. Therefore, you get that the equation of this line in Slope-Intercept form, is:
A) 180 would be expected to pass.
B) The standard deviation is 4.
C) 95% of people would fall between 172 and 188.
D) Yes, this is more than 3 standard deviations below the mean.
Explanation
A) Multiply the probability by the sample size:
0.6(300) = 180
B) Standard deviation is found by:
√n(p)(1-p)
For our data, we have:
√300(0.6)(0.4) = 4
C) Two standard deviations below the mean is 180-2(4) = 172; two standard deviations above the mean is 180+2(4)= 188.
D) Three standard deviations below the mean is 180-3(4) = 168; 134 is more than this below the mean. 99.7% of data fall within 3 standard deviations of the mean; 0.15% fall below this point, so yes, this is unusually low.
