Answer:
$290
Step-by-step explanation:
We are told that 1 out of 5 buyers change to a more expensive sofa than the one in the sale advertisement.
Now we are told that the advertised sofa is $250 and the more expensive sofa is $450.
Thus;
P(x) for expensive sofa = 1/5
P(x) for sofa in sale advertisement = 4/5
Thus, expected value is;
E(X) = (1/5)450 + (4/5)250
E(x) = 90 + 200
E(x) = $290
Answer:
Number of games Grangers won = 12
Step-by-step explanation:
Given:
Number of ponits = [Number of games won]3 + number of games drawn
Grangers have = 42 points
Number of game drawn = 6 games
Find:
Number of games Grangers won
Computation:
Number of ponits = [Number of games won]3 + number of games drawn
42 = [Number of games won][3] + 6
36 = [Number of games won][3}
[Number of games won] = 12
Number of games Grangers won = 12
Answer:
-8 5/12
Step-by-step explanation:
Given:
Pool swimming Ocean swimming Total
Age 30 and younger 228 54 282
Over 30 years old 142 185 327
total 370 239 609
Frequencies:
Pool swimming Ocean swimming Total
Age 30 and younger 228/609 = 0.37 54/609 = 0.09 282/609 = 0.46
Over 30 years old 142/609 = 0.23 185/609 = 0.30 327/609 = 0.54
<span>total 370/609 = 0.61 239/609 = 0.39 609/609 = 1.00</span>
<span>The relative frequency (rounded to the nearest hundredth) of a person over 30 years old who prefers to swim in the ocean is 0.30</span>
