Show Intro/Instructions A political candidate has asked you to conduct a poll to determine what percentage of people support her. If the candidate only wants a 5% margin of error at a 90% confidence level, what size of sample is needed? Hint: Textbook Video +1

Q: A political candidate has asked you to conduct a poll to determine what percentage of people support…

A: When nothing is known about population proportion, Assume p=0.5 I will use excel to solve this…

Q: A political candidate has asked you to conduct a poll to determine what percentage of people support…

A: Find z-critical value

Q: A political candidate has asked you to conduct a poll to determine what percentage of people support…

A: It is given that margin of error (E) is 0.03 and the confidence level is 99%.

Q: A political candidate has asked you to conduct a poll to determine what percentage of people support…

A:

Q: A university dean is interested in determining the proportion of students who receive some sort of…

A: It is given that Sample size n = 250 Number of students receiving scholarship, X = 70 The critical…

Q: A political candidate has asked you to conduct a poll to determine what percentage of people support…

A: Solution: From the given information, confidence level is 0.95 and E=0.05.

Q: A magazine provided results from a poll of 2000adults who were asked to identify their favorite pie.…

A: There are 2000 respondents 11% chose chocolate pie, and the margin of error is ±3 percent. The value…

Q: A political candidate has asked you to conduct a poll to determine what percentage of people support…

A: The confidence level is 99% Therefore, α = 0.01 and α/2=0.005. The margin of error is 0.01. Since…

Q: A political candidate has asked his/her assistant to conduct a poll to determine the percentage of…

A: Here we need to find the required sample size. Since nothing is mentioned about the population…

Q: A political candidate has asked you to conduct a poll to determine what percentage of people support…

A: Given: The Margin of Error E=0.04 Confidence level =95% Since the population proportion is not known…

Q: A political candidate has asked you to conduct a poll to determine what percentage of people support…

A: Obtain the sample size of a no preliminary estimate for p. The formula of sample size is, Obtain…

Q: A political candidate has asked you to conduct a poll to determine what percentage of people support…

A: We have given that  Margin of error =E =3% E=0.03 If not given population proportion p then we use…

Q: A political candidate has asked you to conduct a poll to determine what percentage of people support…

A: It is given that margin of error (E) is 0.08 and the confidence level is 0.90.

Q: A political candidate has asked you to conduct a poll to determine what percentage of people support…

A:

Q: Out of 600 people sampled, 510 had kids. The best point estimate for p is The margin of error for a…

A:

Q: A political candidate has asked you to conduct a poll to determine what percentage of people support…

A: Given that  Margin of error=E=3%=0.03 95% confidence  level

Q: If the candidate only wants a 7% margin of error at a 99% confidence level, what size of sample is…

A: Since you have asked multiple question, we will solve the first question for you. If you want any…

Q: A political candidate has asked you to conduct a poll to determine what percentage of people support…

A: From the given information, Margin error = 0.06 Assume sample proportion = 0.5   Critical value:…

Q: A political candidate has asked you to conduct a poll to determine what percentage of people support…

A:

Q: A political candidate has asked you to conduct a poll to determine what percentage of people support…

A: Assume p-hat as 0.5, since no preliminary estimate is available.

Q: A media research group uses samples of 5500 households to rank TV shows. The group reported that a…

A:

Q: olitical candidate has asked you to conduct a poll to determine what percentage of people suppo…

A: From the available information, The margin of error is,  E=3%=3/100=0.03 The confidence level is 90%…

Q: A political candidate has asked you to conduct a poll to determine what percentage of people support…

A: Introduction: The 100 (1 – α) % confidence interval for the population proportion, p is: Here, n is…

Q: A political candidate has asked you to conduct a poll to determine what percentage of people support…

A: Since, you have asked multiple question, we will solve the first question for you. If you want any…

Q: A political candidate has asked you to conduct a poll to determine what percentage of people support…

A: Obtain the sample size of a no preliminary estimate for p. The formula of sample size is, Use EXCEL…

Q: A political candidate has asked you to conduct a poll to determine what percentage of people support…

A: A political candidate has asked you to conduct a poll to determine what percentage of people support…

Q: A political candidate has asked you to conduct a poll to determine what percentage of people support…

A: The sample size is obtained below: From the given information, if the proportion value is unknown,…

Q: A political candidate has asked you to conduct a poll to determine what percentage of people support…

A: Given : Margin of error : E = 5% = 0.05 Confidence level : CL = 90% = 0.90 Level of Significance : α…

Q: If n=10, (x-bar)=45, and s=8, find the margin of error at a 99% confidence level Give your answer to…

A: Provided information: Mean = 45 Standard deviation = 8 Sample size = 10 99% confidence level

Q: I need help finding the answer on the TI84 Plus CE and on paper ?. Thank you

A: It is given that margin of error (E) is 0.10 and the confidence level is 90%.

Q: A political candidate has asked you to conduct a poll to determine what percentage of people support…

A: According to the provided information, α=0.10 Zα/2= 1.645 (from the standard normal table)

Q: A political candidate has asked you to conduct a poll to determine what percentage of people support…

A: From the given information,   Margin error = 0.06 Assume Sample proportion = 0.5   Critical value:…

Q: A political candidate has asked you to conduct a poll to determine what percentage of people support…

A: Given data,Margin of error(E)=0.2%=0.002Let proportion be p=0.5z-value at 99.5% confidence is…

Q: A political candidate has asked you to conduct a poll to determine what percentage of people support…

A:

Q: A political candidate has asked you to conduct a poll to determine what percentage of people support…

A:

Q: Find a point estimate of the proportion of applicants accepted into the chemistry program.  b)…

A: Given that  n=75 , X=12

Q: We want to obtain a 95% confidence level for the national smoking prevalence (i.e., the population…

A: Given Data: p^=1680=0.2 n=80   z-value corresponding to 95% Confidence level=1.96

Q: A political candidate has asked you to conduct a poll to determine what percentage of people support…

A: The margin of error is 0.02 and the confidence level is 0.90.

Q: Andrew Rodriguez, Walnut's mayor, is conducting a survey to see what percentage of people support a…

A: From the provided information, Margin of error (E) = 3% = 0.03 Confidence level = 95% Assuming the…

Q: A political candidate has asked you to conduct a poll to determine what percentage of people support…

A: Introduction: The 100 (1 – α) % confidence interval for the population proportion, p is: Here, n is…

Q: A political candidate has asked you to conduct a poll to determine what percentage of people support…

A:

Q: A political candidate has asked you to conduct a poll to determine what percentage of people support…

A: We know that, Margin of error, E = 3% = 0.03 Confidence level = 98% = 0.98

Q: A political candidate has asked you to conduct a poll to determine what percentage of people support…

A: When nothing is known about the proportion, consider population proportion to be p=0.50…

Q: A political candidate has asked you to conduct a poll to determine what percentage of people support…

A:

Q: Please explain how to do this problem on paper and TI 84

A: It is given that the confidence level is 0.90.Here,

Q: Margin of error= ?​% ​(Type an integer or decimal rounded to one decimal place as​ needed.) The…

A:

Q: A political candidate has asked you to conduct a poll to determine what percentage of people support…

A: The formula for the sample size is as follows: Here,zα/2 is the critical value at 99% confidence…

Q: A poll for a statewide election has a margin of error of 2.88 percentage points. How many voters…

A: Given, margin of error  =2.88 α=0.10zα/2=1.645         (From normal standard table)

Q: a) Based on the sample, do we have some evidence to confirm the belief of the researchers? Explain.…

A: x1 =70.857 x2 = 65.071 s1 = 15.045 s2 =13.846 n1 = 28 n2 = 28