Brandon works at a small petting zoo with 8 animals. he was looking at some data showing the masses of the animals. each animal had a different mass between 2 and 160 kg. the zoo then buys a horse that weighs 900 kg as their 9th animal how does buying the horse affect the mean and median?

a)both the mean and median will increase, but the median will increase by more than the mean.
b)both the mean and median will increase, but the mean will increase by more than the median.
c)both the mean and median will decrease, but the median will decrease by more than the mean.
d)both the mean and median will decrease, but the mean will decrease by more than the median.

okay wait before i answer, is this for your points on a graph?

table 3 represents a direct variation function. : )

d. 24+-0.114

step-by-step explanation:

the question requires us to calculate the approximate 95% confidence interval for the mean number of ounces of ketchup per bottle in the sample given the following statistics;

sample mean = 24

standard deviation, σ = 0.4

sample size , n = 49

the confidence interval for a population mean is calculated using the formula;

sample mean ± z-score*(σ/sqrt(n))

the z-score associated with a 95% confidence interval, from the standard normal tables, is;

1.96

substituting these values into the formula;

24 ± 1.96*(0.4/7)

= 24 ± 0.112

from the alternatives given, choice d is closest to the above expression;