When asked what they consider to be the best birthday present, 64% of a random sample of  800 adults say "money." What is the estimated margin of error for this survey? A. 0.1% B. 3.5% C. 5.0% D. 6.4% E. 12.5%

Q: Determine whether the sampling method described below appears to be sound or is flawed.   In a…

A: A sample in which the subjects themselves decide whether to be included in the study is called…

Q: 2. A birthday party host planned for 20 people, but 17 actually attended. What is the percent error?

A: Given that a birthday party host planned for 20 people, but 17 actually attend. From these data it…

Q: Which survey question is biased? O a) Does the media impact politics? O b) Is eating fruit good for…

A: A leading question prompts the respondent to answer in a particular way. Leading questions are…

Q: How large a sample should be surveyed to estimate the true proportion of college students who surf…

A:

Q: O What is the proportion of patients that are overweight or obese? D What is the proportion of…

A: It is given that Total number of patients = 204 Number of under weight patients = 34 Number of…

Q: We would like to know: "What percentage of college students read the college newspaper every day?"…

A: There are two ways to draw conclusion about a population.

Q: A newspaper posted this question on its​ website: "How often do you seek medical information​…

A: Voluntary response sample:If the sample made up of volunteers or self-selected participants then the…

Q: Which is a statistical question? How old was George Washington when he became president? How many…

A: Statistical Questions:-    A question is a statistical question of it can be answered with date that…

Q: How smart is your phone? A random sample of 10 Samsung Galaxy smartphones being sold over the…

A: We have given that,  The data set is,  199, 169, 385, 329, 269, 149, 135, 249, 299, 249 standard…

Q: Find the Margin of Error for a survey based upon the sample size. Round to the nearest tenth of a…

A: Margin of error of a survey is given by the formula 1n where n is the sample size. 3. Given sample…

Q: According to The Census Bureau, 60% of adults buy clothing online. a) How many adults did they…

A: Solution: a. From the given information, p=0.60 and E=0.03. The confidence level is 0.95.

Q: When 3,011 adults were surveyed in a Pew Research Center poll, 73% said that they use the internet.…

A: Given Information: n = 3011 ¾ of all adults use the internet (p)  = 75% = 0.75   = 73% = 0.73 Step…

Q: 13. If 27 out of 30 people passed a driving test, what percent failed?

A: Given Total people = 30 Passed people= 27 So ,failed people= 30-27 = 3

Q: A sample was done, collecting the data below. Calc 10 22 28 14

A: Given information: The sample data is provided as: x 10 22 28 14 7 It is to…

Q: If the distribution is approximately mound-shaped, what is the proportion less than 80.12 ? 15

A: Find the value of z using mean and standard deviation.

Q: 4. What is your estimate of the Odds Ratio (OR) from these data? O 0.44 ০০67 O 1.33 O 2.25

A: The odd ratio is a statistical method to make decisions  on making conclusion of various substance…

Q: If the mean of the sampling distribution of the means is 12.4, what is the mean of the population?…

A: Given : The mean of the sampling dist. of the means is 12.4

Q: When Rich calculated the sample mean in Part 2, he mistakenly used the numbers 20, 25, 13, 9, 15,…

A: Given numbers are 20, 25, 13, 9, 15, 11, 17, 17, 30 Sample mean = Total sum of given numbersTotal of…

Q: Using the sample data in Table 1 above, determine the median daily consumption of water.   A…

A: For a grouped frequency distribution, the median is defined as: Md=l+N2-cfhwhere, l=lower limit of…

Q: a. Determine the sample proportion, p, of college students who own shares of stock. b. If the…

A:

Q: From the sample statistics, find the value of p1 - p2, the point estimate of the difference of the…

A: From the provided information,

Q: In a sequential sampling plan, the first, second, third and fourth units are good, good, defective,…

A: answer is explained below

Q: Which survey question has the least amount of bias? O a) Why are vegetables good for you? b) Why are…

A: Answer: Bias: Bias is any systematic failure of a sampling method to represent its population. Or…

Q: How many males were surveyed?

A: It is given that Total = 516 Number of females = 259 Number of males = 257

Q: If you have been told that the 90% CI for the population mean is ( 20.082, 173.478) what is the…

A: The formula of the margin of error is, Where, UCL denotes the upper control limit   LCL denotes the…

Q: In acceptance sampling, usually 100% of the incoming lot is checked. True or False

A: Acceptance Sampling: It is concerned with decision related to acceptance of the lot.   There are…

Q: An event marketing executive thinks that the proportion of consumers who have seen his company’s…

A: In general terms, the larger the sample size n, the more precise of an estimate can be obtained of…

Q: If the proportion of Heads is .45 out of 200 flips, what is the p-value?

A: The proportion of Heads is .45 out of 200 flips.

Q: The symbol for the sample proportion is O Zc

A: Proportion is almost similar to the concept of probability. Proportion is a fraction of population…

Q: What is the value of the standard score for the sample proportion?

A: If mean if the proportion us P And standard deviation is √(pq/n) Then standard score or Z score for…

Q: One design problem in the development of measurement instruments concerns the sequence of questions.…

A: The sequence with which each question appears in a survey is known as question sequencing. This…

Q: 4. Ms. Ellis expected 50 families to attend parent-teacher conferences, but 60 families attended.…

A: To calculate the percentage error

Q: What is the margin of error for a poll with a sample size of 2000 people? Round your answer to the…

A:

Q: We would like to know: “What percentage of college students read the college newspaper every day?”…

A: We have to find given probabiity.

Q: If 31 out of 50 students sampled live in a college dormitory, what is the estimated proportion of…

A:

Q: a) What proportion of workers answered yes to the survey? b) What was the margin of error?

A: Here, the 95% confidence interval for the proportion of workers that answered 'yes' is (0.62, 0.73).…

Q: Find the Margin of Error for a survey based upon the sample size. Round to the nearest tenth of a…

A: 1. The given sample size is 32.   Obtain the margin of error as follows: Margin of…

Q: A recent study attempted to estimate the proportion of Florida residents who were willing to spend…

A:

Q: A sample of Reese's pieces contains the following: 23 Orange, 14 Brown, 18 Yellow.  What is the…

A:

Q: 5. A study attempted to estimate the proportion of Florida residents who were willing to spend more…

A: Population: Population consists of the complete subjects that are included in the study for making…

Q: Online Medical Info USA Today posted this question on its website: “How often do you seek medical…

A: Given:Online Medical info USA wants to take a survey. So they posted a question on its website, “How…

Q: A random sample of students was surveyed and asked to list their grade level and whether or not they…

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Q: class YES NO Undecided freshman 48 21 11 sophomore 34 52 What proportion of those surveyed were…

A:

Q: In an AOL survey of Internet​ users, this question was posted​ online: "Have you ever been hit by a…

A: Given: The question posted online is: Have you ever been hit by a computer​ virus? Among the​…

Q: How could the survey question "Have you ever had a drink of alcohol?" be revised to obtain a valid…

A: Introduction :- We are given one survey question. We have to revise these questions to obtain valid…

Q: Find the estimated standard error for the sample mean for n = 13 and SS = 3639. Nearest hundredths…

A: It is given that n = 13 and SS = 3639.

Q: For a nuclear reduction plan, to compare the approval rate from people with college degrees and the…

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Q: What is the sample proportion

A: Claim: More than half of the population believes that passwords should be replaced with biometric…

Q: A research report from an independent-measures study states that there are significant differences…

A: Given, A research report from an independent-measures study states that there are significant…