Instruction 10-13 to Investigate the Efficacy of a Diet,a Random Sample of Sample

question 86

Short Answer

Instruction 10-13
To investigate the efficacy of a diet,a random sample of 16 male patients is drawn from a population of adult males using the diet.The weight of each individual in the sample is taken at the start of the diet and at a medical follow-up 4 weeks later.Assuming that the population of differences in weight before versus after the diet follow a normal distribution,the t-test for related samples can be used to determine if there was a significant decrease in the mean weight during this period.Suppose the mean decrease in weights over all 16 subjects in the study is 3.0 kilograms with the standard deviation of differences computed as 6.0 kilograms.
-Referring to Instruction 10-13,what is the 90% confidence interval estimate for the mean difference in weight before and after the diet?

---

Definitions:

Product Life Cycle

The stages a product goes through from development and introduction to the market, through growth, maturity, and decline.

Hybrid Cars

Vehicles powered by a combination of an internal combustion engine and one or more electric motors that use energy stored in batteries, offering increased fuel efficiency and lower emissions compared to conventional vehicles.

Waiting Lists

Lists of individuals or entities awaiting their turn for services or goods, commonly seen in healthcare, housing, or high-demand product scenarios.

Growth Stage

Stage of the product life cycle when the product gains acceptance, demand and sales increase, and competitors emerge in the product category.