ALL ABOUT STATS

Instruction: Read and follow the instructions. 1. We measure the heights of 40 randomly chosen men, and get a mean height of 175 cm with a standard deviation of 20 cm. The true mean height of all men is likely to be between 168.8 cm and 181.2 cm at 95% confidence level. Identify the following: (a) point estimate (b) confidence level (c) confidence interval (d) significance levelInstruction: Explain your answer if possible to receive full credit. There are hundreds of apples on the trees, so you randomly choose just 46 apples and get a mean weight of 86 grams with a standard deviation of 6.2 grams. The true mean weight of of the hundreds of apples is likely to be between 84.21 grams and 87.79 grams with 95% confidence level. Identify the following: 1. point estimate 2. confidence level 3. confidence interval 4. significance level