Answer:
As a general rule of thumb, a small confidence interval is better. The confidence interval will narrow as your sample size increases, which is why a larger sample is always preferred. As our page on sampling and sample design explains, your ideal experiment would involve the whole population, but this is not usually possible.
Step-by-step explanation:
Answer:
2/3
Step-by-step explanation:
First find what fraction of caffeine is hydrogen, 1 - 3/6 - 2/6 - 1/6 = H meaning hydrogen = 0/6 or 0.
Next add O + N + H which is 3/6 + 1/6 + 0/6 which is 2/3.
not much on the probability of getting exactly one 4 on four rolls of a die
Answer:
7/12
Step-by-step explanation:
i think this is right sorry if wrong
Answer:
$393.20
Step-by-step explanation:
There are two easy ways to solve this:
1) Use a setup and cross multiply.
First, set up your problem.
<u> $ x </u> = <u>40%</u>
$983 100%
$983 is the total amount, so it is equal to 100%. We're trying to find 40% of it, so we can label the amount as $x. Remember, each side has to be in the same type of measurements (i.e. dollars, percentages, inches, etc.).
Then, cross multiply. You should end up with:
100x = 39,320
Then, simplify.
x = 393.2
x = $393.20
2) Convert the percentage to a decimal and multiply.
First, convert the percentage you're looking for into a decimal:
40% × 100 = 0.4
Then, multiply the decimal with the total sales amount:
$983 × 0.4 = 393.2
= $393.20
