This is statistics course and I need help with answering those questions. This is Estimation

unit and for question 3, they both of them have same answer key options.

1. Press United reported that chocolate was "America's favorite ice cream" according to a poll conducted by Press United in the fall of 2009. When asked which avor of ice cream was the best, 43 percent of respondents chose chocolate. The poll contacted 740 adults by mail and reported a 4 percent margin of error. Which of the following correctly describes the meaning of the 4 percent margin of error? 0 About 4 percent of adults were likely to change their minds between the time of the poll and the publication in Press United. 0 About 4 percent of adults did not respond to the poll in the mail. 0 About 4 percent of adults did not have a valid mailing address. 0 About 4 percent of adults did not like ice cream at all. 0 The difference between the sample percentage and the population percentage is liI-celv to be less than 4 percent. Question 2 10 pts 2. In the example above 0.43 could be used as which of these? 0 a point estimate of the population parameter Q a condence interval of the point estimate 0 a population parameter of the point estimate 0 a condence interval of the population parameter Q a point estimate of the sample statistic D Question 5 10 pts 5. What is the width of a condence interval? 0 0.5 times the standard deviation 0 2 times the standard deviation 0 0.5 times the margin of error 0 1 margin oferror O 2 times the margin of error D Question 6 10 pts 6. A poll asks 750 participants to taste two brands of rice cakes. Suppose 43% chose brand X, 41% chose brand Y, and 16% had no preference. Which of these margins of error would allow us to justifiably argue that there was a clear preference for brand X? Select all that apply. E 0.5% E 1.0% E 1.5% I: 2.0% E 2.5% D Question 8 10 pts 8. Of the people polled in your community, 61% support building a new library. The value 0.61 is likely a(n)_ -. There may be more than one answer, so select all that apply. O confidence interval O confidence estimate O point estimate O statistic O parameter O proportion O mean D Question 9 10 pts 9. A random sample of 100 New Yorkers resulted in a 90% confidence interval for the mean number of hours of sleep per day of (6.72, 7.45). Which of these is the best interpretation of the meaning of this confidence interval? O A New Yorker selected at random sleeps between 6.72 and 7.45 hours per day 90% of the time. O 90% of all New Yorkers sleep between 6.72 and 7.45 hours per day. 0 90% of the New Yorkers in the survey reported sleeping between 6.72 hours and 7.45 hours per day. O Repeated sampling under these conditions would produce a confidence interval which contains the population mean hours of sleep per night for this population 90% of the time. O Repeated sampling under these conditions would result in a confidence interval of (6.72, 7.45) 90% of the time.D Question 10 10 pts 10. For a 96% confidence interval, which of these is the correct value and interpretation of the meaning of a? O 0.02; There is a 2% chance that the true population parameter is outside of the confidence interval. O 0.04; There is a 4% chance that the true population parameter is outside of the confidence interval. O 0.04; There is a 96% chance that the true population parameter is outside of the confidence interval. O 0.96; There is a 4% chance that the true population parameter is outside of the confidence interval. O 0.96; There is a 96% chance that the true population parameter is outside of the confidence interval.Question 3 10 pts 3. One of the most important uses of statistics is to estimate Select ] from [ Select ] Select] population statistics population parameters sample statisticsQuestion 4 10 pts 4. Automated soda machines can be used to fill up soda containers automatically. This saves individual workers small bits of time throughout the day which ultimately helps the company provide faster and better service to their customers, which leads to higher profits. The company wants 16-ounce cups to be filled with 15.4 ounces of soda so that there is less risk of spillage. Imagine a new soda machine that consistently filled 16-ounce cups to 14.9-ounces, plus or minus 0.1 ounces. This machine has [ Select ] and is [ Select ] [ Select negatively biased unbiased positively biased7. The image below shows a simulation of drawing 500,000 samples of size n = 5 from a parent population (in black) which is skewed right. The image below also shows the distribution of the means of the 500,000 samples (blue) and the distribution of the medians of the 500,000 samples (pink). mean= 8.08 Parent population (can be changed with the mouse) median= 7.00 ad= skew= 0 83 kurtosis= 0.06 Sample Data Reps= 500000 Distribution of Means, N=5 mean= 8.08 66582 - median= 8.00 $5485- sd# 44358- skew- 0 37 33291 - kurtosis= 0.07 22194 11097 Reps= 500000 Distribution of Medians, N=5 mean= 7.21 55194 4 median= 7.00 45895- sd= 3-53 36796 - skew= 0.68 27597 kurtosis= 0.30 15398 9199 This simulation illustrates that the sample mean is a(n) [Select ] point estimate of the population mean and the sample median is a(n) [Select ] Select estimate of the population median. unbiased biased susceptibleQuestion 4 10 pts 4. Automated soda machines can be used to fill up soda containers automatically. This saves individual workers small bits of time throughout the day which ultimately helps the company provide faster and better service to their customers, which leads to higher profits. The company wants 16-ounce cups to be filled with 15.4 ounces of soda so that there is less risk of spillage. Imagine a new soda machine that consistently filled 16-ounce cups to 14.9-ounces, plus or minus 0.1 ounces. This machine has [ Select ] V and is [ Select ] [ Select ] low variability high variability