D Question 4
Apoll of 100 senior citizens in a retirement community asked about the types of
electronic communication they used. The table shows the joint and marginal frequencies
from the poll results.
If you are given that one of the people polled uses text messaging, what is the
probability that the person is also using e-mail? Express your answer as a decimal. If
necessary round your answer to the nearest hundredth.
Uses text messaging
Total
08
Uses e-mail
Yes No
Yes 0.16 0.64
No 008 0.12
Total 0.24 0.76
02
1

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.

step-by-step explanation:

ask goog great chance of finding the solution there

probability for j is 1/4

while

a is 1/6

b mark me branliest thx

step-by-step explanation: