Prices were recorded for all the loaves of bread in a supermarket, the mean price for a loaf of bread was $1.37 with a standard deviation of $0.67, Find the probability that if 13 loaves are selected the mean price is less than $1.00.

A 0.0032

B 0.5643

C 0.9105

D 0.0233

And we want this probability:

And using the normal standard distribution or excel we got:

And the best option would be:

D 0.0233

Step-by-step explanation:

For this case we have the following parameters:

And we select a sample size of n=13. And we want to find this probability:

We can assume that the distribution for this case is normal and then we can use the z score formula given by:

And if we replace the data given we got:

And we want this probability:

And using the normal standard distribution or excel we got:

And the best option would be:

D 0.0233

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: 230 miles ( vote ! )

step-by-step explanation:

180.39 minus 17.99 equals 162.4

then divide 162.4 by .80 to get 230