Answer:
test statistic, z = −1.74
Step-by-step explanation:
given data
students n = 100
mean time x = 41.13 seconds
σ = 5
we consider µ = 42
solution
we get here The test statistic that is express as
test statistic, z = ......................1
put here value and we will get
test statistic, z = \frac{41.13-42}{\frac{5 }{\sqrt{100}}}
test statistic, z = −1.74
Answer: 2
Step-by-step explanation: If the the square and circle have the same area of 12.4, you would need to divide 12.4 by pie or 3.14 to get the diameter. The radius is half the diameter, so you divide the diameter by 2. In this case, 12.4/3.14=3.94. 3.94/2=1.97. You round that up and you get 2
Answer:
Step-by-step explanation:
see below, if you have any questions leave a comment
Answer:
y = (4/3)x
Step-by-step explanation:
Two points on the line are the origen (0, 0) and the given (9, 12).
Starting at the origin and moving to (9, 12), we see the change in x being 9 and that in y being 12. Thus, the slope of the line through these two points is m = rise/run = 12/9 = 4/3.
Thus the equation of the line in slope-intercept form is y = (4/3)x + 0, or
just y = (4/3)x