Assume that the data is normally distributed and population standard deviations are known : 1)From preliminary rat brain studies, it is believed that there are roughly 100
different neurotransmitter receptors found on postsynaptic nerves. Dr. Sigh
and their lab does not believe that is accurate. The researchers acquired 150
rat brains to perform an analysis on. They found a sample mean of 83.5
receptors and a population standard deviation of 19. Using the 0.01 level of
significance perform a hypothesis test and state the final outcome.

solution:

as, mean is defined as sum of all the observations divided by total number of observations.

and , median is mid value of the data whether arranged in ascending order or descending order.

consider, roadsters:

2,3,4,5,6,7,8,9

mean =

also, median= , because number of observations is even, so median is mean of two mid values.

now, coming to bandits

2,3,4,5,6

mean =  

median = 4, as number of observations is odd.

so, roadsters has greater median as well mean than bandits.

→option a is true about the repairs performed on 2 types of cars:

bandits have lower median and mean than roadsters.

72 fudge and 75 toffee

step-by-step explanation:

i hope this : )

set each factor equal to 0

4x-3 = 0

2x-1 = 0

solve for x.

4x-3=0

4x=3

x= 3/4

solve for x. 

2x-1= 0

2x= 1

x= 1/2

eventually after a few more steps, your answer should be 1/2 is less than or equal to x and 3/4 is greater than or equal to x

i think it would be 42cm