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Question: Another mistaken poll. Prior to the mayoral election discussed in Exercise, the newspaper also conducted a poll. The paper surveyed a random sample of registered voters stratified by political party, age, sex, and area of residence. This poll predicted that Amabo would win the election with 52% of the vote. The newspaper was wrong: Amabo lost, getting only 46% of the vote. Do you think the newspaper's faulty prediction is more likely to be a result of bias or sampling error? Explain.
Exercise: Mistaken poll. A local TV station conducted a "PulsePoll" about the upcoming mayoral election. Evening news viewers were invited to phone in their votes, with the results to be announced on the latenight news. Based on the phone calls, the station predicted that Amabo would win the election with 52% of the vote. They were wrong: Amabo lost, getting only 46% of the vote. Do you think the station's faulty prediction is more likely to be a result of bias or sampling error? Explain.
How many students should be surveyed to estimate the mean score within 25 points with 90% confidence?
A company has three separate divisions. Based on the capital invested, Division A made 10 cents per dollar, Division B made 20 cents per dollar, and Division C made 30 cents per dollar. How can the overall profit for the company be found?
a test to detect pollutants is 90 accurate when pollutants are present in a sample and 96 accurate when pollutants are
What is the probability that a particular flight may be safe with at least one working radio? Why does the usual rounding rule of three significant digits not work here? Is this probability high enough to ensure flight safety?
Estimate the average number of minutes longer a woman must work out at light exertion than at heavy exertion to get the same benefit. Give a 95% confidence interval.
For each parent there is a 50-50 chance that the child will inher- it either the dominant or the recessive gene. Calculate the probability of the child having the disease if: Both parents are carriers and One parent is a carrier and the other..
Determine equation in point-intercept form for line that goes through points (8,-1) and (4,3).
Analyze the data. Write a summary of your results concerning the relationship between the adhesive and the occurrence of face checks. Be sure to include numerical and graphical summaries as well as the details of your significance tests.
If the board wants to set the passing score so that only the best 80% of all applicants pass, what is the passing score? Assume that the scores are normally distributed. Round to the nearest whole number.
Using What's Best! (or Solver) determine the least-cost shipping schedule, where each of three (3) hardware vendors provide up to two hundred (200) units and each of six (6) buyers demand one hundred (100) units.
Draw the Activity On Node project network.- Identify the critical path clearly and determine the total project time.
Do a two-sided Fisher's exact test at the 0.05 level of the null hypothesis that the lady is guessing randomly. Do a one-sided test at the 0.05 level.
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