Tongue Piercing May Speed Tooth Loss, Researchers Say" is the headline of an article. The article describes a study of 51 young adults with pierced tongues. The researchers found receding gums, which can lead to tooth loss, in 18 of the participants.   (a) Construct a 95% confidence interval for the proportion of young adults with pierced tongues who have receding gums. (Round your answers to three decimal places.)

Q: 7. (Sec. 7.2) In a survey of 2004 American adults, 501 of them said that they believed in astrology…

A: Introduction:The 100 (1 – α) % confidence interval for the population proportion, π is: (p – (zα/2­)…

Q: The student government association at a university wants to estimate the percentage of the student…

A: As per guideline expert have to answer first question only.

Q: 1. A study in 2010 performed by called people on the phone asked 2251 US adults the question "Do you…

A:

Q: You assessed depression score of 50 college students using a 7-point rating scale (1 = not depressed…

A: To explain the possible measure of central tendency for the depression score.

Q: A recent study of a very large number of parents on cyberbullying showed that a 95% confidence…

A: Given data,For 95% CILower limit=0.1238Upper limit =0.2036Proportion (p)=?

Q: 3. A researcher wants to estimate the impact of alcohol during pregnancy on premature delivery.…

A: Given : p1:probability of premature delivaries=0.12p2:proportion of normal pregnancies…

Q: Researchers in a statistics course at a Texas college wanted to investigate the optimism in…

A: Given that, The objective of the research study was to investigate the optimism in receiving a job…

Q: In a survey of 2000 American adults age 60 and over, 1320 received a flu shot. Construct a 90%…

A: Given that,X =  1320N = 2000

Q: In Dr. Potter’s study of ‘Objective Increases in Fear Based on Type of Haunting’, he reported that…

A: a. It is given that, ghosts earned a z-score of 0.93, spirits earned a z-score of -0.75, and…

Q: Question is below and the data is attached: The amounts of a chemical compound y that dissolved in…

A: a) Confidence interval for the average amount of chemical at  50∘Cgiven the fitted regression…

Q: A researcher is interested in constructing a 99% confidence interval for the proportion of Alzheimer…

A: Given Information :  A researcher is interested in constructing a 99% confidence interval for the…

Q: Please help!

A: Test whether there is enough evidence to conclude that the mean approval of interpersonal violence…

Q: HELP WITH QUESTIONS 1 AND 2 THAT GOES ALONG WITH PICTURE.... Question 2: What does the result…

A: From the given information, Sample size n =23 Sample mean, x̅=97.1 Sample standard deviation, s=20.1…

Q: Suppose you have a data set with 33 observations (n=30). What is the t-score for a confidence Level…

A: It is given that n=30 and confidence level is 0.90.

Q: This was a question on my homework and I would like to know if I answered it correctly. Thank you…

A: Odds (O):The “odds” of the occurrence of an event is the ratio of the number of occurrences of the…

Q: What is the probability that a registered voter voted in the election? About About 3,166,339…

A:

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

A:

Q: n 2005, Health Canada claimed that 16.8% of Canadian adults are obese. A researcher wanted to check…

A:

Q: A researcher is interested in examining whether self-affirming oneself leads to increases in…

A: The spread of the data set was obtained by subtracting the maximum and minimum values. It is also…

Q: According to a poll, 89% of California adults (450 out of 506 surveyed) feel that education is one…

A: Find a 90% confidence interval for the population proportion.

Q: . A sample of 84 WCC students found mean age 24.7 years old with standard deviation 7.9 years old.…

A:

Q: A researcher is interested in examining whether self-affirming oneself leads to increases in…

A: According to honor code of Bartleby, you can only ask upto three subparts of a question, please…

Q: Around 4,560 participants were included in a study that wanted to see the relationship on smoking…

A: Researchers arrange data in contingency table to study relationship between categorical variables.

Q: Question 1 A recent survey collected information on television viewing habits from a random sample…

A:

Q: How effective is gastric bypass surgery in maintaining weight loss in extremely obese people? A…

A: Given information No of subjects who had received gastric bypass surgery (n) = 426 Proportion of…

Q: Question 9: A study was run to determine the proportion of adults that feel sleep-deprived. A 95%…

A: Given that, a study was run to determine the proportion of adults that feel sleep-deprived. A 95%…

Q: 2 Again use the data from Table [ Fifty randomly-selected Durham burials (1960-1969) ] . (a)…

A: 2. (a) The sample mean is, x¯=∑xn=69+62+75+⋯+77+7150=308250=61.64 Thus, the sample mean is 61.64.…

Q: There is no difference(s) between an interval estimate and a confidence interval estimate. If true ,…

A: We can make only two types of estimates about the population. 1. Point estimate = A single value…

Q: QUESTION 2 In which of the following situations we can not construct a confidence interval for the…

A: The condition for constructing the confidence interval for population proportion P using Normal…

Q: to survive a heart attack, the researchers reported the ages of the two groups they examined. The…

A: Given: Without cardiac disease Sample size n1=2397Sample mean x¯1=69.8Sample standard deviation s…

Q: You are watching a nightly news broadcast on CNN and the reporter says that a 99% confidence…

A:

Q: If n=25, 7(x-bar)=48, and s=4, find the margin of error at a 80% confidence level

A: The sample size is 25, sample mean is 48, and sample standard deviation is 4. The degrees of freedom…

Q: According to an article nearly 45% of all Americans have brown eyes. A random sample of 100 people…

A: the first option is correct , explanation is in below pdf:

Q: The table below is a record of the number of miles driven between stops for gas and the amount of…

A: The table below is a record of the number of miles driven between stops for gas and the amount of…

Q: A new drug to treat high cholesterol is being tested by pharmaceutical company. The cholesterol…

A: Mean difference (M) = 15.91 mg/dL Standard deviation of the mean difference (s) = 15.2714 mg/dL…

Q: A new drug to treat high cholesterol is being tested by pharmaceutical company. The cholesterol…

A: We have given information, The cholesterol levels for 27 patients were recorded before administering…

Q: A research study reported a 95% confidence interval for the mean time of hip surgeries based on a…

A: Solution - Given that, A research study reported a 95% confidence interval for the mean time of hip…

Q: An article published in the Washington Post claims that 45 percent of all Americans have brown eyes.…

A: Givenx=30n=78p^=3078p^ =0.385H0:p=0.45Ha:p≠0.45

Q: 6. A sample of 15 students was used to estimate the performance of graduates of a certain college on…

A: Given : A sample of 15 student's was used to estimate the performance of graduates of a certain…