My teacher always told me if you dont know the answer choose c.
Answer:
Confidence interval = [ 0.4432, 0.4968]
Step-by-step explanation:
Registered voters approved of the job Barack Obama was doing as president,
p = 47% = 0.47
Total sample size, n = 2,294
Confidence level = 99%
now,
confidence interval for the proportion of all registered voters who approved of the job Barack Obama was doing as president
= p ±
for 99% confidence level, z value is 2.58
= 0.47 ±
= 0.47 ± 0.0268
or
Confidence interval = [0.47 - 0.0268, 0.47 + 0.0268 ]
or
Confidence interval = [ 0.4432, 0.4968]
Answer:A -1/3+1
Step-by-step explanation: the lope of the line is -1/3 and the Y-intercept is 1
and putting it in slope y-intercept form would be Y=-1/3+3
Answer:
$29.25
Step-by-step explanation:
35% if 45 is 15.75 and then 45-15.75=29.25
51 inches is 2 inches more than the mean, which is 1 standard deviation.
Using the 68, 95, 99.7 rule:
100-68 / 2 = 16% would be taller than 51 inches.