Find a 95% confidence interval estimate of the percentage of students that loved statistics above all other subject

Q: 4. You conduct a survey of 16 random students at the Trafalgar campus of Sheridan College. Among…

A: We have to answer questions based on confidence interval for the proportions.

Q: After a hailstorm, a large car dealership wants to determine the proportion of cars that have…

A:

Q: 6% of all merchandise sold gets returned in an imaginary country, Camaro. Sampled 80 items are sold…

A: (a) Obtain the 95% confidence interval for the proportion of returns at the store in Maniou…

Q: In a survey of 2255 randomly selected US adults (age 18 or older), 1787 of them use the Internet…

A: Given data, n=2255 x=1787   sample proportion p=x/n =1787/2255 = 0.792   z-value at 90% confidence…

Q: 5000 teleVision se ercent Tive years thout hee repair. In order to test this claim, a consumer group…

A: The value of z at a 99% confidence level is 2.576, which can be obtained by using the standard…

Q: In a recent survey of 750 people, 600 people claimed to watch football.  Construct a 95% confidence…

A: Solution: 9. Let X be the number of people who watch football and n be the sample number of people…

Q: 1. A survey of 224 children of ages 9 to 17 was conducted shortly after 1986 space-shuttle disaster.…

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Q: Audio cassette tapes of a particular brand are claimed by the manufacturer to give, on average, at…

A: Given: The audio cassette includes the value of at least 60 minutes of playing time. It includes 64…

Q: (B) In a hospital, an orthopedic doctor collects a random sample of 63 previous patients and checks…

A: The independent variable is the surgical total hip patients that will have improved recovery time…

Q: A random sample of 12 students showed the following time (in hours) of sleep 4.5 5 5.5 6 6 7 7.5 7.5…

A: Given data  4.5,5,5.5,6,6,7,7.5,7.5,8,9,5,7 n=12

Q: Free throws 2011 During the 2010–2011 NBA season,Stephen Curry led the league by making 212 of…

A: a) Computing the 95% confidence interval for difference in population proportion: It is given that…

Q: Assume that all necessary conditions were met for creating a confidence interval for a proportion.…

A: The estimated proportion CI is expected to include the true proportion, provided that we are…

Q: 7. David and Yukiko are each attempting to estimate the proportion of OSU students who live more…

A: The margin of error for single proportion is, E=zα2p^1-p^n where, zα2 is critical value, p^ is…

Q: 6.24 Social Networking Sites In a survey of 2255 randomly selected US adults (age 18 or older), 1787…

A: It is given that out of 2255 US adults, 1787 US adults use the internet regularly. Let pA be the…

Q: Find the margin of error an the 95% confidence interval   -26. A recent survey of 65,000 households…

A: Solution: 26. The confidence level is 0.95. From the given information, p-hat=0.077 and n=65,000.…

Q: a) Are the conditions for creating a confidence interval satisfied? Explain. O A. No, because the…

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Q: The researcher rejected the null hypothesis at the 95% confidence level where F(2, 14) = 53.54, p =…

A: F-table  / Technology can be used to find P-value. I am using Excel function,

Q: 1. A group of researchers want to find out what is the percentage of men applying to all nursing…

A: given that,possible chances (x)=45size(n)=300success rate ( p )= x/n = 0.15point of estimate =…

Q: 11. A television station surveys 200 customers and finds that 23% of customers watch the evening…

A: Margin of error = z*√(pq/n) Where z= z value            n=no of customer            q=1-p…

Q: #4. A college president commissioned a study to find the proportion of students enrolled at her…

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Q: 2. A researcher wants to estimate the daily expenses of college students. He wants a 95% confidence…

A: We have given that,  Population standard deviation (σ) = 99.50, margin of error (E) = 45 and…

Q: Wildlife biologists inspect 139 deer taken by hunters and find 29 of them carrying ticks that test…

A:

Q: Using p′=0.167, q′=0.833, and n=180, what is the 95% confidence interval for the proportion of the…

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Q: A clinical trial tests a method designed to increase the probability of conceiving a girl. In the…

A: We have given that,  Favorable cases (X) = 322 and sample size (n) = 644 Then,  We will find the 99%…

Q: A research institute asked students if they felt vulnerable to identity theft. In the poll, n=1047,…

A:

Q: Social Networking Sites In a survey of 2255 randomly selected US adults (age 18 or older), 1787 of…

A: Given that Sample size (n)=2255 The number of US adults use internet regularly=1787 The number of US…

Q: In a past presidential election, 37,285,240 people voted for Candidate A; 37,201,620 for Candidate…

A: Percentage=value for the corresponding variable observationtotal value*100 The value range interval,…

Q: A proportion, p, that many public opinion polls estimate is the number of Americans who would say…

A:

Q: (B) In a hospital, an orthopedic doctor collects a random sample of 52 previous patients and checks…

A: Note: According to the guidelines, only the first three subparts have been solved. To get the…

Q: given: 110 homes in kingston (n1) and the proportion of the sample is p1 100 homes in owen sound…

A:

Q: A clinical trial tests a method designed to increase the probability of conceiving a girl. In the…

A: It is given that the sample size (n) is 280 and x is 252.

Q: A. Find a 98% confidence interval for the proportion of heads in the experiment. B. Is there a…

A: here given ,  sample size  = n = 15000  x = no of heads  = 7515 here p^ =  751515000 = 0.501

Q: 41. There is an ever increasing number of sources of getting the daily news – traditional…

A: Confidence intervals helps to find how much certain we can be with respect to a sampling method.

Q: a clinical trial tests a method designed to increase the probability of conceiving a girl. In the…

A: Given: Number of babies born (n)=360 Number of girl babies (x) = 306 Level of confidence = 0.99

Q: A Gallup poll asked a sample of Canadian adults if they thought the law should allow doctors to end…

A: Givensample size(n)=260x=163p^=xn=163260=0.6269

Q: Telemarketers obtain names and telephone numbers from several sources. To determine whether one…

A: From the provided information,

Q: 12. A health professional is concerned that people aren't brushing their teeth correctly in Knox…

A: Note: Hey there! Thank you for the question. As you have posted multiple sub-parts, we have helped…

Q: 1-A survey made for the customer satisfaction levels comparison of two competing  companies, 174…

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

Q: Social Networking Sites In a survey of 2255 randomly selected US adults (age 18 or older), 1787 of…

A: Solution: Given information: n= 2255 Sample size of US adults  x = 1787 US adults used internet…

Q: Lightning Deaths The graph in Cumulative Review Exercise 5 was created by using data consisting of…

A: The confidence interval is obtained as follows:

Q: Social Networking Sites In a survey of 2255 randomly selected US adults (age 18 or older), 1787 of…

A:

Q: For each confidence interval procedure, provide the confidence level. (Round the answers to the…

A:

Q: survey of 40 students at a local college asks, "Where do you buy the majority of your books?" The…

A: The objective is to develop a 99% confidence interval estimate of the proportion of all of the…

Q: Safety. Observers in Texas watched children at playin eight communities. Of the 814 children seen…

A: a.

Q: If n=570 and ^p(p-hat) =0.5, construct a 99 percent confidence interval. In order to use technology,…

A: Here it is given that ,  Sample size , n = 570. Sample proportion (p⏞) =0.5  , Confidence level  =…

Q: Social Networking Sites Ina survey of 2255 randomly selected US adults (age 18 or older), 1787 of…

A:

Q: In a past presidential election, 36,523,493 people voted for Candidate A; 36,417,321 for Candidate…

A: The appropriate interpretation is to be made considering the proportion of votes for candidate A.

Q: The business college computing center wants to determine the proportion of business students who…

A: Given that, The business college computing center wants to determine the proportion of business…

Estimation

A new framework of data analysis where the new statistical methods are used for interpreting the results and analyzing the data is known as estimation in statistics.