Perform the hypothesis tests below, show your steps andcalculations. Identify the distribution that you will be using foreach one. Please remember to draw your conclusions and interpretyour decisions
1-According to the National Coalition on Health Care, the meanannual premium for an employer health plan covering a family offour cost $11,500 in 2007. A random sample of 100 families of fourtaken this year showed a mean annual premium of $11,750. Assuming$1500 ï³ = , test whether the mean annual premium has increased,using a 0.05 significant level. Use the p-value method
2- Health issues due to being overweight affect all age groups.Of children and adolescents 6 – 11 years of age, 18.8% are found tobe overweight. A school district randomly sampled 130 students inthis age group and found that 20 were consideredoverweight.  At the 90% level of confidence, is thisless than the national proportion? Use the p-value method.
