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Given a sample X1,…,Xn∼Uniform(3,10), what sample size ensures that there is a 95% chance that the...

Given a sample X1,…,Xn∼Uniform(3,10), what sample size ensures that there is a 95% chance that the sample mean is less than 7?

a. 457

b. 180

c. 13

d. 256

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