That's all I remember rn. Graphing site is desmos.com if you wanted to know.
Answer:
there are no equations I can choose from
Step-by-step explanation:
...
Answer: Where is the work??
Step-by-step explanation:
Answer:

And the z score for 0.4 is

And then the probability desired would be:

Step-by-step explanation:
The normal approximation for this case is satisfied since the value for p is near to 0.5 and the sample size is large enough, and we have:


For this case we can assume that the population proportion have the following distribution
Where:


And we want to find this probability:

And we can use the z score formula given by:

And the z score for 0.4 is

And then the probability desired would be:

Well there is no background info, it would be impossible to guess