Hw7_skeleton

8.2

• 1. .44
• 2. Sample Proportion, p̂= x/n
• 3. false
• 4. true
• 5. the shape of the sampling distribution is approximaely noraml if np (1-p ) ≥ 10.
• 6. the standard deviation gets smaller, the standard deviation would decrease by .5 (be cut in half)
• 7. the sampling distribution is approximately normal with mu p̂=.4, and sigma p-hat=.0219
• 8. sampling distribution is approximately normal with mu p-hat= .7 and a standard deviation of .264
• 1. the shape of the sampling distribution is approximately normal with a mean of p= 0.35 and a standard deviation of 0.015

  2. 0.0040

  3. 0.0233

• 1. aproximately normal with a mean of p=.42 and a standard deviation of 0.0129.

  2. .0102

  3. .0606

• 1. approximately normal wth a mean of p= 0.39 and a standard deviation of 0.022

  2. 0.3233

  3. 0.3203

  4. 0.0845