Hw7_skeleton

8.2

• 1. p = 0.44
• 2. sample proportion; p-hat = x/n
• 3. False
• 4. True
• 5. When np(1-p) is greater than or equal to 10 and n is less than or equal to 0.05N
• 6. The standaer deviation decreases as the sample size increases.
• 7. The sampling distribution of p-hat is approximately normal with Mp-hat = 0.4 and signma p-hat = 0.022
• 8. The sampling distribution is approximately with Mp-hat = 0.7 and sigma p-hat = 0.026
• 1. Sampling distribution approximately normal with Mp-hat = 0.35 and sigma p-hat = 0.015

  2. 0.0040

  3. 0.0228

• 1. Sampling distribution approximately normal with Mp-hat = 0.42 and sigma p-hat = 0.2436

  2. 0.4522

  3. 0.4681

• 1. Mp-hat = 0.39; signma p-hat = 0.022

  2. 0.3264

  3. 0.3232

  4. 0.0869