Answer:
5. 78.54
6. C
7. 254.47
8. 50.25
Step-by-step explanation: :) Remember, the radius is just half of the diameter. So if the Diameter is 18, the radius is 9.
Answer:
$175
Step-by-step explanation:
susan babysit for 2×4+6=14 hours a week
so she works 14×5=70 hours in 5 weeks
in a hour she earn $2.50
in 70 hours she earn 2.50×70=$175
Answer:
y = 5x - 28
Step-by-step explanation:
y - y1 = m(x - x1)
y - 7 = 5(x - 7)
y - 7 = 5x - 35
add 7 to both sides to get rid of - 7 --> y = 5x -35 + 7
click on picture, sorry if it's hard to read, but my phone messed up the typing
Answer:
Step-by-step explanation:
Data given and notation
n=100 represent the random sample taken
estimated proportion of interest
is the value that we want to test
represent the significance level
z would represent the statistic (variable of interest)
represent the p value (variable of interest)
Concepts and formulas to use
We need to conduct a hypothesis in order to test the claim that the true proportion is 0.45.:
Null hypothesis:
Alternative hypothesis:
When we conduct a proportion test we need to use the z statistic, and the is given by:
(1)
The One-Sample Proportion Test is used to assess whether a population proportion
is significantly different from a hypothesized value
.
Calculate the statistic
Since we have all the info requires we can replace in formula (1) like this: