Consider the following data set:
1 answer:
Answer:
E. 72.7
Step-by-step explanation:
Here, we need to figure out the proportion of the population, which is higher than 20.
Now, in this statement, the data set of the population is explicitly given, so the sample is irrelevant.
Here, the set of data is : 5, 33, 25, 55, 96, 75, 23, 69, 37, 17, 12.
Among this given data set of 11, The numbers which are higher than 20 are {33, 25, 55, 96, 75, 23, 69, 37}.
So, here 8 numbers are present in this data set which are greater than 20.
So for finding out the proportion, the calculation will be:
Calculation:
* 100 = 72.72%
Therefore we get from the calculation that the population proportion, which is higher than the number 20, is 72.72% or 72.7%.
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Answer:
a) Probability that Julia misses two shots in a row =
b) We can use the complement rule on this case. Let X the number of shoots successful, we want this probability:
And using the complement rule we have this:
And P(X=0) correspond to the probability that Julia misses two shots in a row founded on part A so then we have:
Step-by-step explanation:
Part a
For this case we know that Julia enjoys shooting paper balls into the basket across her office.
She misses the first shot 50% of the time.
Probability that Julia misses the first shot =
When she misses on the first shot, she misses the second shot 20% of the time.
Probability that Julia misses the second shot =
For this case we need to find the probability of missing two shots in a row
So we can multiple the two probabilities like this
Probability that Julia misses two shots in a row =
Part b
For this case we want probability of making at least one successful throw
And we can use the complement rule on this case. Let X the number of shoots successful, we want this probability:
And using the complement rule we have this:
And P(X=0) correspond to the probability that Julia misses two shots in a row founded on part A so then we have: