From 3 hours to 30 minutes percentage

A decrease to 30 minutes from 3 hours corresponds to a 83.3% relative decrease, or a reduction to a time period that is 16.7% of the original period (depending on a more precise meaning of your question, see below)

Steps:

Relative decrease from y to x:

100*(y-x)/y in %

So y = 3 hr and x = 30 min. Rewrite to fractions: x=6/2 hr, y=1/2 hr

rel decrease =  

Percentage of reduced time period:

the 30 minutes time period corresponds to of the full period of 3hr, or 16.67% (this is in case your question was asking for the percentage the remaining amount represents of the total amount).

Let me know if you have questions.

c

step-by-step explanation:

it isn't d, because the interquartile range is from 27-57. and the interquartile range is basically half the data, it's pretty obvious.

it isn't b, because like i said earlier, the interquartile range is from 27-57. 57-27 is 30. the real range has to be longer

not a either. although it looks like it, 3/4 of the data is not greater than 27. but if c is wrong than this should be correct

the correct answer is c, because 13 is the point in which the plot starts

answer:

step-by-step explanation:

here, the total dishes = 10

dishes having meat = 3 ( chicken, meatloaf and hamburger )

thus, the probability of having meat on the chosen dishes = number of dishes having meat / total dishes

=

therefore, the probability of not having meat = 1- the probability of having meat on the chosen dishes

=

=

=

⇒ option b is correct.