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Tanya [424]
2 years ago
9

Math please help !!!!!

Mathematics
1 answer:
bixtya [17]2 years ago
7 0

Answer:

hope it helped

Step-by-step explanation:

2nd one is the answer

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At a university, 12% of students smoke. Calculate the expected number of smokers in a random sample of 140 students from this un
Masteriza [31]

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a) The expected number of smokers in a random sample of 140 students from this university is 16.8 smokers.

b) No, it is unlikely that smoking habits and waking up early to go to the gym on Saturday are independent.

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To calculate the expected numbers of smokers in a sample with size n=140 and proportion p=12%, we use the expected value of the binomial distribution:

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Solve: 3/5y + 3 = 11 + 1/5y
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