Answer:
Throw this sample out and start over again with a better sampling method
Step-by-step explanation:
Biased sampling leads wrong results, since the sample doesn't represent the population which is aimed to be surveyed. Higher/lower confidence level or t distribution cannot correct it.
Confidence level gives the probability of rejecting null hypothesis while it is true. And t-interval is used when the sample size is small or population standard deviation is unknown.
Before choosing confidence level or type of the statistic to infer results, one must follow random sampling not biased.
Answer:
y = 13x - 1
Step-by-step explanation:
y = 13 x - 1
Slope y intercept
Answer:
the answer is A
Step-by-step explanation:
cross multiply 16×4 =64
Answer:
8. x=-5 and y=7
9. x=-2 and y=0
10. x=-6 and y=-10
11. x=8 and y=-4
12. x=9 and y=-9
13.x=4 and y=10
14. x=5 and y=-7
Step-by-step explanation:
Answer:
143
Step-by-step explanation:
Let x = original price
20% of the original price is .2x
We get 20 % off so we subtract it from the original price
x- .2 x
That is equal to 114.40
x-.2x = 114.40
Simplify
.8x = 114.40
Divide each side by .8
.8x/.8 = 114.40/.8
x = 143
The original price is 143
