The results of a survey on the belief that stem cell research has merit are shown in the table below. X 1524 N 2104 Sample p 0.724335 Here, X denotes the number who believed that stem cell research has merit. Complete parts a and b below. ... 95% CI (0.7052, 0.7434) a. Explain how to interpret "Sample p" and "95% CI" in this table. The "Sample p" is the proportion of in the sample who believe stem cell research has merit, 1524/2104≈ 0.72. The "95% CI" is the 95% confidence interval and it means that we can be confident proportion. that the interval to contains the (Round to four decimal places as needed.)

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You are the operations manager for an airline and you are considering a higher fare level for passengers in aisle seats. How many randomly selected air passengers must you​ survey? Assume that you want to be 95​% confident that the sample percentage is within 5.5 percentage points of the true population percentage. Complete parts​ (a) and​ (b) below. a. Assume that nothing is known about the percentage of passengers who prefer aisle seats.   n=   nothing ​(Round up to the nearest​ integer.) b. Assume that a prior survey suggests that about 33​% of air passengers prefer an aisle seat.   n=   nothing ​(Round up to the nearest​ integer.)

A researcher wants to determine the percentage given below. Describe how the researcher should apply the five basic steps in a statistical study. (Assume that all the people in the poll answered truthfully.) the percentage of volunteers that volunteer over 10 hours per week Determine how to apply the first basic step in a statistical study in this situation. Choose the correct answer below. A. The population is all volunteers that volunteer over 10 hours per week The researcher wants to estimate the number in this population that volunteer over 10 hours per week OB. The population is all volunteers. The researcher wants to estimate the percentage in this population that volunteer over 10 hours per week. C. The population is all volunteers that do not volunteer over 10 hours per week. The researcher wants to estimate the number in this population that do not volunteer over 10 hours per week. D. The population is all volunteers. The researcher wants to estimate the percentage in this…

pls answer a,b,c without using excel. pls use paper so i can understand thank youu

You are the operations manager for an airline and you are considering a higher fare level for passengers in aisle seats. How many randomly selected air passengers must you survey? Assume that you want to be 99% confident that the sample percentage is within 1.5 percentage points of the true population percentage. Complete parts (a) and (b) below. a. Assume that nothing is known about the percentage of passengers who prefer aisle seats. n= (Round up to the nearest integer.) B- Assume that a prior survey suggests that about 38% of air passengers prefer an aisle seat. n = (Round up to the nearest integer.)

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You are the operations manager for an airline and you are considering a higher fare level for passengers in aisle seats. How many randomly selected air passengers must you survey? Assume that you want to be 95% confident that the sample percentage is within 5.5 percentage points of the true population percentage. Complete parts (a) and (b) below. a. Assume that nothing is known about the percentage of passengers who prefer aisle seats. n = (Round up to the nearest integer.) b. Assume that a prior survey suggests that about 34% of air passengers prefer an aisle seat. n = IDound un to the nearest integer)