Question

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 Live Health 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 Wetpoint 92 35 41 82 57 48 40 104 55 77 94 46 97 75 75 80 92 101 51 80 Assuming the population is roughly symmetric, construct a 95% confidence interval for the mean savings for a televisit to the doctor as opposed to an office visit (to 2 decimals). 95% confidence interval: $ tos per visit

Answer 1

Answer:-

Here population variance is unknown therefore we used t test to compute confidence interval

C-0.gs. 21-C=8705, na 20 teritical = tn-l, f/2 tig, 0.05/2 treitical 2-092 - 20 Sample Exi_ : 1422- S = Semple Standard deviations Elxj - *)? 11 9589-8 19 nal S = 22. 4661 & 95% CI fox e is tot to He sto 111•1 I 2.093 x 22.4667520 ( WHAT = 10.51) (71.1 – 10.51, 11•1 + 10.51 ( 60.59, 8:61) a 95% (I. for mean mean savings for a televisit to the doctor a to an office visit i $ 160.59 to to 81.61 per visit

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