Michael is running for president. The proportion of voters who favor Michael is 0.8. A simple random sample of 100 voters is taken. What is the probability that the number of voters in the sample who will not favor Michael will be between 26 and 30? [6 marks]
Michael is running for president. The proportion of voters who favor Michael is 0.8. A simple...
53% of voters in a state favor an increase in the size of the state legislature. Suppose a simple random sample of 303 adults is obtained. (a). Is the sample proportion of voters who favor the increase normally distributed? Explain (b). Find the mean of the sampling distribution of the sample proportion of voters who favor the increase. (c). Find the standard error of the sample proportion of voters who favor the increase. (d). Write the R code to calculate...
Suppose we conduct a poll to estimate the proportion of voters who favor a major presidential candidate. Assuming that 50 percent of the electorate could be in favor of the candidate, determine the sample size needed so that we are 95 percent confident that pˆ , the sample proportion of voters who favor the candidate, is within a margin of error of .01 of p, the population proportion of all voters who are in favor of the candidate. n =...
A random sample of 432 voters revealed that 100 are in favor of a certain bond issue. A 95 percent confidence interval for the proportion of the population of voters who are in favor of the bond issue is
r. Who is running for election in China Town. following hypotheses are set up: Suppose p represents the probability of voters who favor him. 4) M The Ho:p=07 against HA:p<07 It is agreed that a sample of 81 individuals picked at random will be interviewed, and if 55 or more people declare in favor of Mr. Who, then the Null hypothesis will be accepted. Otherwise, the Null hypothesis will be rejected. a) Find the probability of making the Type I...
Suppose that of all registered voters in a certain state favor banning the release of information from ect polls in presidential elections until after the poils in that state dose. A random sample of 25 registered voters is to be selected. Let x-number of registered voters in this random sample who favor the ban. (Use Table 9 in Appendix A. Round your answers to three decimal places) (a) What is the probability that more than 20 voters favor the ban?...
A pollster wishes to estimate the proportion of United States voters who favor capital punishment. How large a sample is needed in order to be 98% confident that the sample proportion will not differ from the true proportion by more than 2%? O A. 6,787 O B. 30 O c. 3,394 OD. 2,401 Click to select your answer.
3. A senator wishes to estimate the proportion of United States voters who favor abolishing the Electoral College. How large a sample is needed in order to be 99% confident that the sample proportion will not differ from the true proportion by more than 4%? OA. 849 OB. 17 C. 2,073 D. 1,037 abould be
A survey organization is going to take a simple random sample of ? voters from among all the voters in a state, to construct a 99% confidence interval for the proportion of voters who favor a proposition. Find an ? such that the total width of the confidence interval (left end to right end) will be no more than 0.06. Remember that you can bound the variance of an indicator.
10.9 Exercise: Approval Rating Let p denote the proportion of Americans who approve President Trump. In a poll of December, 2018, an estimated approval rating for President Trump was 48% among 3,018 registered voters. Treat the sample as a simple random sample (i.e., a fair representation of all registered voters in U.S.). Is this statistical evidence that the population approval rating is less than 50% of all registered voters in the nation? Use a = 0.05 for the significance level....
A population proportion is 0.3. A sample of size 100 will be taken and the sample proportion p will be used to estimate the population proportion. Round your answers to four decimal places 2 of the population proportion? a. what is the probability that the sample proportion will be within ±0.0 b. What is the probability that the sample proportion will be within +0.06 of the population proportion? s A simple random sample of 100 orders will be used to...