1. Based on a sample of 140 people, 17 said they prefer "Trydint" gum to "Eklypse". A. The point estimate is:_______ (to 3 decimals) B. The 95 % confidence interval is:________ 0.067 to 0.175 C. Based on this we:

• Reject the null hypothesis
• Fail to reject the null hypothesis

2. If your null and alternative hypothesis are: H0:p=0.63H0:p=0.63 H1:p<0.63H1:p<0.63 Then the test is:

• left tailed
• two tailed
• right tailed

3. A chart in which the sample means of samples taken at regular intervals are plotted against the time order in which the samples were taken is called

• a p chart
• an R chart
• an s chart
• an x chart