1) 5x+1= 8x-32 x =?
2 answers:
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Answer: 0.2119
Step-by-step explanation:
We assume that the random variable X is normally distributed.
Given : Population mean :
Standard deviation :
Z-score :
Then, z-score corresponds to 116
By using the standard normal distribution table for z , we have
Hence, the required probability = 0.2119
Answer:
Total number of people in the stadium = 520
Step-by-step explanation:
Let the total number of people in the stadium = x
Since, 25% of the fans are teenagers, number of teenagers in the stadium
= 25% of x
=
= 0,25x
If the number of teenagers in the stadium = 130
0.25x = 130
x =
x = 520
Therefore, total number of fans in the stadium = 520.