Answer:
The probability that the average score of the 49 golfers exceeded 76 is 0.0228
Step-by-step explanation:
To find the probability that the average score of the 49 golfers exceeded 76, we need to calculate z-score of the score 76.
Z-score can be calculated as follows:
z= where
- X=76
- M is the mean score of all golfers (75)
- s is the standard deviation of the scores (3.5)
- N is the sample size (49)
then z(76)= = 2
By looking at the z-table we find that the probability of z-values of scores smaller or equal to 2 is Pr(Z<2)=0.9772. Therefore
The probability that the average score of the 49 golfers exceeded 76 is 1-0.9772=0.0228
Now let's put all the fractions at the same denominator :
Hope this helps !
Photon
Answer:
Succulents=8
Cacti=7
Step-by-step explanation:
x will be how much succulents he bought and y would be how many cacti he bought.
x+y=15. Since he bought 15 plants.
2x+y=23
x=8
y=7