Answer: 0.5363
Step-by-step explanation:
Given : Population mean :
and standard deviation :
sample size : n= 100
Let x be the random variable that represents the thickness of sheet.
Since the probability for each element in a Simple random sample is equal.
∴ Using formula ,
The z-value corresponds to x=4.1
The probability that the sample mean would be greater than 139.7 millimeters will be :-
Hence, the required probability : 0.5363
The answer to the question is b
In cash =$500
In credit =$200+5($70)
= $200+350
= $550
So 550-500
=$50
0.21094 is the probability that the surgery is successful on exactly 3 patients.
<h3>What is probability?</h3>
It is the branch of mathematics concerning numerical descriptions of how likely an event is to occur, or how likely it is that a proposition is true.
According to the given question,
Let Y = The number of patients who respond yes:
Given ,
The probability that the surgery is successful on exactly 3 patients is 0.21094
Learn more about Probability here:
brainly.com/question/23345093
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