The biggest key here is identifying outliers. Outliers can pull measures of center either up or down drastically.Notice how the males have a VERY low outlier. This will pull the mean down severely and create a much larger range, or spread.The females have a median of about 12 hours, but have an upper extreme of 19, which compareatively is very high. This creates a larger range as well.
Answer:
15°
Step-by-step explanation:
AB is parallel to DC and AD is parallel to BC
Therefore, if you put Angle D and Angle C together it must form 180°
If Angle C = 120°, that means Angle D = 60°
Now you subtract 45 from 60 and that gives you 15.
Answer:
Step-by-step explanation:
given that
A cereal manufacturer is concerned that the boxes of cereal not be under filled or overfilled.
Each box of cereal is supposed to contain 13 ounces of cereal.
A random sample of 31 boxes is tested.
The average weight is 12.58 ounces and the standard deviation is 0.25 ounces.
Sample mean = 12.58
Sample std deviation = 0.25
Sample size = 31
Sample std error = 
confidence interval can be calculated using t critical value because population sd is not known.
df = 30
t critical for two tailed = 1.697
Margin of error = 
conidence interval = 
Since this does not contain 13 oz. we reject the claim that each box contains exactly 13 oz.