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Finding probability of a rating that is between 200 and 275

A bank's loan officer rates applicants for credit. The ratings are normally distributed with a mean of 200 and a standard deviation of 50. If an applicant is randomly selected, find the probability of a rating that is between 200 and 275.

a. 0.0668

b. 0.4332

c. 0.5

d. 0.9332

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