3 (14 pts). A polling company wanted to estimate the populat…

3 (14 pts). A polling company wanted to estimate the population proportion of adults who were in favor of tighter rules on TV content during hours when children are most likely to be watching. A sample of 1800 adults was surveyed and 1366 responded yes. (a) What is the population? What is the sample? (b) Construct a 99% confidence interval for the population proportion.

8 (14 pts). The percentage of customer satisfaction for a ho…

8 (14 pts). The percentage of customer satisfaction for a hotel was 73% last year. The manager wants to know whether there is any difference of customer satisfaction between this year and last year. A survey of 544 customers shows that 386 customers are satisfied. (a)  What is the population? What is the sample? (b) At α = 0.05 level of significance, determine whether there is evidence that the percentage of customer satisfaction this year is different from 73%. (c) Identify the type of error for your conclusion. Find the probability of error and probability of confidence if it is type I error.