The 2015 Millman Medical Index reported on its website that in 2015 the average annual out of pocket medical costs for a typical family were $4,065. A health care consumer group believes that the actual average is higher than this. Suppose the group as selected random of 120 "typical" households and asked them to go back through their 2015 medical payments and record the total out of pocket expenses for the year. The data are in file called Medical Expenses. Based on these data, what should the consumer group conclude, using an alpha level 0.01?

For this question, formulate Null and Alternative hypotheses, then answer the question using the given data.

Medical Expenses

4348

4510

4372

4465

4609

4178

3821

4383

3737

3941

4335

4061

4188

4362

3937

3931

3906

3873

4398

3922

4827

4051

3945

4541

4140

4018

4382

4319

4502

4177

4114

4166

4638

5061

4268

4040

4139

3866

3597

4369

4491

4031

4563

4294

3765

4316

4352

3909

3508

4333

4229

3946

3748

4827

3956

4036

4120

3854

4568

4334

4193

3971

3680

4402

3731

4523

4134

3877

4238

4085

3652

4207

4266

3784

3902

4063

4002

3742

4330

4176

4193

4384

4415

4031

3837

3916

5145

4572

3840

4228

4644

4537

3955

4138

4253

3623

4328

3733

4653

4122

3871

4706

4006

3685

3764

4354

3915

4499

3956

4571

4025

4622

4474

4145

3902

4086

4319

4271

4587

4137