The spotter on the ground is standing beneath the safety net. What is his distance from the base of the platform, to the nearest
1 answer:
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Answer:
a) P(X≥143)=0
b) This contradicts the study as getting a sample with this proportion is almost impossible (if the proportion of 68% is true).
Step-by-step explanation:
If we use the normal approximation to the binomial distribution we have the following parameters (mean and standard deviation):
Then, we can calculate the probability of X being equal or more than 143 using the z-score:
This contradicts the study as getting a sample with this proportion is almost impossible (if the proportion of 68% is true).
For this case we have the following expression:
If we add to both sides of the equation we have:
To eliminate the roots we must raise both sides to the cube:
So, the correct option is the option c
Answer:
Option C
Answer:
The number of hot dogs sold was 35 and the number of sodas sold was 52
Step-by-step explanation:
Let
x ----> the number of hot dogs sold
y ----> the number of sodas sold
we know that
----> equation A
----> equation B
Solve the system by substitution
substitute equation A in equation B
solve for y
<em>Find the value of x</em>
therefore
The number of hot dogs sold was 35 and the number of sodas sold was 52