Answer:
16 1/3 lbs
Step-by-step explanation:
We can write a ratio to solve
7 lbs x lbs
-------------- = -------------
3 loaves 7 loaves
Using cross products
7 * 7 = 3x
49 = 3x
Divide each side by 3
49/3 = 3x/3
16 1/3 lbs
Step-by-step explanation:
Vertical line => Slope is Undefined.
Answer:
1/108
Step-by-step explanation:
One of the boys and one of the girls are siblings
1/9 × 1/12
1/108
There is a relationship between confidence interval and standard deviation:

Where

is the mean,

is standard deviation, and n is number of data points.
Every confidence interval has associated z value. This can be found online.
We need to find the standard deviation first:

When we do all the calculations we find that:

Now we can find confidence intervals:

We can see that as confidence interval increases so does the error margin. Z values accociated with each confidence intreval also get bigger as confidence interval increases.
Here is the link to the spreadsheet with standard deviation calculation:
https://docs.google.com/spreadsheets/d/1pnsJIrM_lmQKAGRJvduiHzjg9mYvLgpsCqCoGYvR5Us/edit?usp=sharing
Step-by-step explanation:
∆=3*6=18
[]=5*15=75
75+18=93 in squared