Answer:
33
Step-by-step explanation:
396/x - 10 = -22
add 10 to each side
396/x = -12
multiply both sides by x
396 = 12x
divide both sides by 12
33 = x
50 divided by 4 is 12.5 so there is about 12 or 13 students on each bus.
Answer:
Step-by-step explanation:
Width of the room in the drawing = x
1 : 3 :: x : 18
Product of means = Product of extremes
3 * x = 18 *1
x = 18 ÷ 3
x = 6
Width of the room in the drawing = 6 inches
Answer:
b
Step-by-step explanation:
you use desmos to help you graph or for calculations (that's what I use lol)
Answer:
The upper limit for the 95% confidence interval for the population proportion of defective gaming systems is 0.022
Step-by-step explanation:
Upper Limit for 95% Confidence Interval can be calculated using p+ME where
- p is the sample proportion of defective gaming systems (
)
- ME is the margin of error from the mean
and margin of error (ME) around the mean can be found using the formula
ME=
where
- z is the statistic of 95% confidence level (1.96)
- p is the sample proportion (

- N is the sample size (1200)
Using the numbers we get:
ME=
≈ 0.007
Then upper limit for the population proportion is 0.015+0.007 =0.022