I need help with this math problem please.I just need the verbal discription.

Mathematics

1 answer:

Vikki [24]3 years ago

3 0

Answer: The best is to buy 2 gallons of milk, because it is the cheapest solution.

Step-by-step explanation:

If you want to compare the prices of these sizes of milk just count how much would cost the same capacity of milk, example 2 gallons of milk. Then it is easy to compare.

You might be interested in

Suppose that IQ scores have a bell-shaped distribution with a mean of 97 and a standard deviation of 12. Using the empirical rul

tankabanditka [31]

Answer:

0.15%

Step-by-step explanation:

We have been given that IQ scores have a bell-shaped distribution with a mean of 97 and a standard deviation of 12. We are asked to find the percentage of IQ scores that are greater than 133 using the empirical rule.

First of all, we will find z-score for given sample score of 133 as z-score tells us a data point is how many standard deviation away from mean.

$z=\frac{x-\mu}{\sigma}$ , where,

$z$ = Z-score,

$x$ = Sample score,

$\mu$ = Mean,

$\sigma$ = Standard deviation.

$z=\frac{133-97}{12}$

$z=\frac{36}{12}$

$z=3$

We know that according to the empirical rule 68% of data lies within one standard deviation of mean, 95% of data lies within two standard deviation of mean and 99.7% of data lies within one standard deviation of mean.

Since 133 is 3 standard deviation above mean, so 0.3% lies above and below 3 standard deviation.

Since we need IQ scores above 133, so we will divide 0.3% by 2 as:

$\frac{0.3\%}{2}=0.15\%$