Based on pretrial speculation, the prob that a jury will return a guilty verdict in a certain high-profile murder case is though
1 answer:
Answer:
34.5% probability that the jury returns a guilty verdict
Step-by-step explanation:
We have these following probabilities:
The defense attorneys have a 70% chance of convincing the jury that the police either contaminated or planted some of the key evidence.
In this case, there is a 15% probability that the jury will return a guilty verdict.
There is also a 100 - 70 = 30% of not convincing the jury that the police either contaminated or planted some of the key evidence.
In this case, 80% probability of the jury returning a guilty verdict.
What is the probability that the jury returns a guilty verdict?
15% of 70% and 80% of 30%. So
34.5% probability that the jury returns a guilty verdict
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Answer:
A sample of 1068 is needed.
Step-by-step explanation:
In a sample with a number n of people surveyed with a probability of a success of , and a confidence level of
, we have the following confidence interval of proportions.
In which
z is the zscore that has a pvalue of .
The margin of error is:
95% confidence level
So , z is the value of Z that has a pvalue of
, so
.
At 95% confidence, how large a sample should be taken to obtain a margin of error of 0.03 for the estimation of a population proportion?
We need a sample of n.
n is found when M = 0.03.
We have no prior estimate of , so we use the worst case scenario, which is
Then
Rounding up
A sample of 1068 is needed.
Solution:
we are given that
Jack planted 1 1/4 rows of lettuce in the family garden.
Rose planted 1 1/2 rows of broccoli and Calvin planted 4 5/12 rows of beans.
we have been asked to find -How many rows were planted in the garden?
To find this , we will add all the numbers of rows planted.
Hence number of rows planted