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Case for Questions

Health insurers are beginning to offer telemedicine services online that replace the common

office visit. Wellpoint provides a video service that allows subscribers to connect with a

physician online and receive prescribed treatments). Wellpoint claims that users of its

LiveHealth Online service saved a significant amount of money on a typical visit. The data

shown below ($), for a sample of 20 online doctor visits, are consistent with the savings per

visit reported by Wellpoint.

91 33 39 104 82 54 55 48 39 75 47 95 92 73 72 77 92 99 52 81

Assume the population is approximately normal.

1. Provide a point estimate of the mean savings reported by Wellpoint

2. Provide a sample standard deviation of savings reported by Wellpoint

3. Construct a 95% confidence interval for the mean savings for a televisit to the doctor as

opposed to an office visit.