MathStatisticsQ&A LibraryToo Young to Tat Based on a Harris poll, among adults who regret getting tattoos, 20% say that they were too young when they got their tattoos. Assume that five adults who regret setting tattoos are randomly selected, and find the indicated probability. a. Find the probability that none of the selected adults say that they were too young to get tattoos. b. Find the probability that exactly one of the selected adults says that he or she was too young to get tattoos. c. Find the probability that the number of selected adults saying they were too young is 0 or 1. d. If we randomly select five adults, is 1 a significantly low number who say that they were too young to get tattoos?

Question

Too Young to Tat Based on a Harris poll, among adults who regret getting tattoos, 20% say that they were too young when they got their tattoos. Assume that five adults who regret setting tattoos are randomly selected, and find the indicated probability.

a. Find the probability that none of the selected adults say that they were too young to get tattoos.

b. Find the probability that exactly one of the selected adults says that he or she was too young to get tattoos.

c. Find the probability that the number of selected adults saying they were too young is 0 or 1.

d. If we randomly select five adults, is 1 a significantly low number who say that they were too young to get tattoos?

Tagged in

Math

Statistics

Find answers to questions asked by students like you.

Q: The given data represent the total compensation for 10 randomly selected CEOs and their company's st...

A: The regression equation is obtained by using EXCEL. The software procedure is given below:In Excel s...

Q: A variable of a population has a mean of µ = 35 and a standard deviation of σ = 42. a. If the variab...

A: a.Sampling distribution of a sample mean:

Q: Emergency Room Traffic. Desert Samaritan Hospital in Mesa, Arizona, keeps records of its emergency-r...

A: (a)The density curve of the variable is,

Q: examples of graphic presentation of data

A: Line graphs:Graphs are used to represent statistical data. A line graph is a diagram showing the rel...

Q: Answer true or false to each statement. Explain your answers. a. Two normal distributions that have ...

A: a)The statement is true because the graph is symmetric to the mean irrespective of standard deviatio...

Q: Consider the normal curves that have the parameters µ = 1.5 and σ = 3; µ = 1.5 and σ = 6.2; µ = -2.7...

A: Justification:The spread is represented by standard deviation (σ). If the value of the standard devi...

Q: Regarding a scatterplot matrix: a. Identify two of its uses. b. What property should the scatterplo...

A: a)Scatterplot matrix:A scatterplot matrix is defined as an array of scatterplots of the response var...

Q: Craps. The game of craps is played by rolling two balanced dice. A first roll of a sum of 7 or 11 wi...

A: Hey there! Thank you for posting the question. Since your question has more than 3 parts, we are sol...

Q: A variable of a population has a normal distribution. Suppose that you want to find a confidence int...

A: a)Following assumptions are required for the large sample confidence interval about mean to be valid...

Q: False Positive Find the probability of selecting a subject with a positive test result, given that t...

A: Given that,

Q: How hot does it get in Death Valley? The following data are taken from a study conducted by the Nati...

A: Mean:The formula for finding mean is shown below:

Q: Sketch the normal distribution with a. µ = 3 and σ = 3.b. µ = 1 and σ = 3.c. µ = 3 and σ = 1.

A: a.The normal distribution with is,

Q: Find the condence level and a for a. a 90% confidence interval.b. a 99% confidence interval.

A: a.The confidence level and α for a 90% confidence interval is obtained below:The confidence level is...

Q: Mean and Standard Deviation Find the mean and standard deviation for the numbers of girls in 8 birth...

A: The data is provided for the probability for the number of girls in 8 births.The mean can be obtaine...

Q: Please help

A: Hello. Since you have posted multiple questions and not specified which question needs to be solved,...

Q: A set of n = 15 pairs of scores (X and Y values) produces a regression equation of Yˆ = 2X + 6. Find...

A: Regression analysis:Regression analysis estimates the relationship among variables. That is, it esti...

Q: For a normally distributed variable, what is the relationship between the percentage of all possible...

A: Justification:From the given information, it can be observed that the relationship between percentag...

Q: What number commonly represents false ?

A: Logic operations include any operations that manipulate Boolean values. Boolean values are either tr...

Q: Find the confidence level and a for a. an 85% confidence interval.b. a 95% confidence interval.

A: The level of significance can be defined as the probability of rejecting the null hypothesis when it...

Q: Hurricanes. In Exercises 5–8, assume that the Poisson distribution applies; assume that the mean num...

A: Poisson distribution:Denote x as number of hurricanes in a year. The variable x follows Poisson dist...

Q: A and B are events such that P(A) = 0.4,P(B) = 0.5, and P(A&B) = 0.2. Answer each question and e...

A: a.Mutually Exclusive Events:Two events are said to be mutually exclusive if they cannot occur at the...

Q: A local store is having a sale. All shoes are 40% off. If a pair of shoes normally costs $13.72 plus...

A: Note:Hey there! Thank you for posting the question. Since exact value is not given, from the given i...

Q: #3

A: Click to see the answer

Q: Identify the formula for the margin of error for the estimate of a population mean when the populati...

A: Margin of error:Margin of error is a range of values that lie above and below the sample statistic o...

Q: In each of Exercises, explain the effect on the margin of error and hence the effect on the accuracy...

A: Formula for the margin of error is given by

Q: Normal Distribution What’s wrong with the following statement? “Because the digits 0, 1, 2,…, 9 are ...

A: Explanation:In statistics, the term “Normal” has a special meaning. The graph of the normal distribu...

Q: Data was collected for 300 fish from the North Atlantic. The length of the fish (in mm) is summarize...

A: The data is provided for the length (in mm) of 300 fish from the North Atlantic.From the provided gr...

Q: FedEx Deliveries With a short time remaining in the day, a FedEx driver has time to make deliveries ...

A: Click to see the answer

Q: Explain why assessing the normality of a variable is often important.

A: The reason for assessing the normality of a variable is often important because to evaluate if “the ...

Q: What does the probability distribution of a discrete random variable tell you?

A: The discrete random variable is obtained by counting values for which there are no in-between values...

Q: Gestation Periods of Humans. For humans, gestation periods are normally distributed with a mean of 2...

A: Hello there, I have used excel to generate the Random no of 2000 sample of size 9 each.It is not pos...

Q: "This is a lie". Is this a paradox ?

A: "This is a lie"Assume it is true that it is a lie, then actually it is a lie indeed and it cannot be...

Q: In each of Exercises, assume that the population standard deviation is known and decide whether use ...

A: The following assumptions are required for the large sample confidence interval about the mean to be...

Q: In each of Exercises, we provide a sample mean, sample size, sample standard deviation, and confiden...

A: a) Givensample mean = xbar =20sample size = n =36sample standard deviation = s = 3confidence interva...

Q: A variable of a population is normally distributed with mean µ and standard deviation σ. For samples...

A: Hey there! Thank you for posting the question. Since your question has more than 3 parts, we are sol...

Q: Explain why increasing the sample size tends to result in a smaller sampling error when a sample mea...

A: Sampling error:When a sample is used to estimate a population characteristic, the error resulting is...

Q: Roughly speaking, what are the normal scores corresponding to a sample of observations?

A: The normal scores corresponding to a sample of observations are observations and expect same sample ...

Q: In each of Exercises, we provide a sample mean, sample size, sample standard deviation, and condence...

A: Given datax̅ = 25, n = 36, s = 3, confidence level= 95%

Q: Let 0< a< 1. Determine the a. z-score having an area of a to its right in terms of za.b. z-sco...

A: a)Given0 < a < 1The Z score having an area of a to its right under standard normal curve is de...

Q: If two dices are rolled, what is the probability that the sum of the up-turned faces will equal 7?

A: In this case, the sample space when two dices are rolled is shown below:

Q: Testing Claims About Proportions. In Exercises 9–32, test the given claim. Identify the null hypothe...

A: Click to see the answer

Q: You have seen that the larger the sample size, the smaller the sampling error tends to be in estimat...

A: Sampling error:When a sample is used to estimate a population characteristic the error resulting is ...

Q: Blackjack In the game of blackjack played with one deck, a player is initially dealt 2 different car...

A: Here, a player is dealt with 2 other cards from the 52 different cards in the deck. Also, the winnin...

Q: What key fact permits you to determine percentages for a normally distributed variable by first conv...

A: In this case, we need to identify key fact that permits determining percentages for a normally distr...

Q: Provide two synonyms for “the distribution of all possible sample means for samples of a given size....

A: Sampling distribution of a sample mean:

Q: In Exercises 21–24, assume that when adults with smartphones are randomly selected, 54% use them in ...

A: Given:Probability of using smartphone in meetings or classes = 0.54Number of selecting adult smartph...