In Tim's garden, the flowers are
only red, white, yellow or blue.
The chart shows the number of
red, white and yellow flowers.
The total number of flowers is 30
a) How many blue flowers are there?
umber of
flowers
b) Write down the mode.
(1)
red
yellow
Colour
T
ele2

Someone answer this check out the image!

Use circumcenter theorem to solve for the given values

An automobile assembly line operation has a scheduled mean completion time, μ, of 12 minutes. the standard deviation of completion times is 1.6 minutes. it is claimed that, under new management, the mean completion time has decreased. to test this claim, a random sample of 33 completion times under new management was taken. the sample had a mean of 11.2 minutes. assume that the population is normally distributed. can we support, at the 0.05 level of significance, the claim that the mean completion time has decreased under new management? assume that the standard deviation of completion times has not changed.