4. A sample obtained from a population with σ = 12 has a standard error of 2 points. How many scores are in the sample? 5. According to the CDC (2016), the average lifespan of someone with diabetes is μ = 72 years, σ = 14. Suppose that sample of n = 64 people diagnosed with diabetes who received a blood glucose monitoring implant had an average life expectancy of M = 76 years. Test the hypothesis that the glucose monitoring implant changes life expectancy. Assume a two-tailed test with the level of significance of 0.05.

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