Math

StatisticsQ&A LibrarySuppose that you randomly selected 23 adults. Assume 20% of the population smoke. Round all answers to 2 decimal places.a) Using the Range Rule of Thumb, what is the minimum number of usual smokers we can expect to get out of 23 adults?b) Using the Range Rule of Thumb, what is the maximum number of usual smokers we can expect to get out of 23 adults?c) Would it be unusual to randomly select 23 adults and get 13 smokers? No, since 13 is between the maximum and minimum usual values. Yes, since 13 is not between the maximum and minimum usual values.Start your trial now! First week only $4.99!*arrow_forward*

Question

Suppose that you randomly selected 23 adults. Assume 20% of the population smoke. **Round all answers to 2 decimal places.****a) **Using the Range Rule of Thumb, what is the minimum number of usual smokers we can expect to get out of 23 adults?**b) **Using the Range Rule of Thumb, what is the maximum number of usual smokers we can expect to get out of 23 adults?**c) **Would it be unusual to randomly select 23 adults and get 13 smokers?

- No, since 13 is between the maximum and minimum usual values.
- Yes, since 13 is not between the maximum and minimum usual values.

Tagged in

Math

Statistics

Find answers to questions asked by students like you.

Q: r9o1010 Au cimal places) sadle Cx03.9 63 The average score of local students on a college entrance e...

A: From the provided information, the average (μ) and standard deviation (σ) of local students on a col...

Q: A random sample of 26 local sociology graduates scored an average of 458 on the GRE advancedsociolog...

A: From the provided information, there are 26 sample (N) with the average (x̄) score of 458 and standa...

Q: In a recent year, the mean number of strokes per hole for a famous golfer was approximately 3.7. (b)...

A: It is given that the mean number of strokes per hole for a famous golfer is 3.7.

Q: Please show ti 84 steps

A: Given information:Here, the mean change in score corresponding to Math is x-bar=18; standard deviati...

Q: A Gallup pool indicated that 29% of Americans spent more money in recent months than they used to. B...

A: As per the question,a)Population of interest is the all Americans who are 18 or older

Q: Consider a binominal experiment with 2 trials and p=0.04 d. Find the probability of at least 1 succe...

A: d)From the given information, the binomial experiment with 2 trails and p=0.04 The probability mass ...

Q: An automobile manufacturer finds that 1 in every 2000 automobiles produced has a particular manufact...

A: It is given that n =5,000 and p = 0.0005 (=1/2,000).The probability mass function of binomial distri...

Q: Suppose x is a normally distributed random variable with u 55 and a 4. Find a value xn of the random...

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

Q: A study of intra-observer variability in the assessment of cervical smears, 3,325 slides were screen...

A: 1) The appropriate Null and Alternative Hypotheses are given below: From the given information, the ...

Q: Six hundred and five survivors of a heart attack, were randomly assigned to follow either (1) a diet...

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

Q: Please see picture

A: In this context, it is assumed that the n students are selected at random without replacement from a...

Q: Selecting a card- when a card is drawn from a deck, find the probability of getting d. A king e. A r...

A: Total number of cards in a deck =52.There are 4 kings in the deck.There are 26 red cards in the deck...

Q: Here is a chart showing how many people are non-smokers, occasional smokers, and heavy smokers by th...

A: Note:Hey there! Thank you for the question. Since you have posted two different questions together, ...

Q: 7q1r2 defects 2 5 0 1 3 1 3 1 1 1 1 5 0 1 4 1 5 1 4 1 3 1 2 2 2 1 3 1 2 1 0 2 3 1 0 0 2 1 1 1 1 0 6 ...

A: a)The hypotheses for the test are stated below:From the information, the level of significance is 0....

Q: At their inauguration, the ages of the first six (out of a current number of 45) presidents of a ...

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

Q: Using the below table: A1 A2 B1 0.4 0.3 B2 0.2 0.1 Calculate P(A...

A: Conditional rule:The formula for probability of A given B is,

Q: Jobs and productivity! How do banks rate? One way to answer this question is to examine annual profi...

A: (a)Using the provided data, the sample mean can be calculated using Excel function “AVERAGE()”.Enter...

Q: Assume that the probability of a being born with Genetic Condition B is p=p=4/15. A study looks at a...

A: It is given that the random variable X, number of births with genetic condition B follows a binomial...

Q: The age of children in kindergarten on the first day of school is uniformly distributed between 4.71...

A: From the given information, the random variable X as the age of children in kindergarten on the firs...

Q: Question Seventy cards are numbered 1 through 70, one number per card. One card is randomly selec...

A: Define the given events A as multiples of 3 and B as multiples of 5.The events A and B are as follow...

Q: A certain flight arrives on time 82 percent of the time. Suppose 198flights are randomly selected. U...

A: It is given that 82% of the time the flight arrives on time. Therefore, probability of a selected fl...

Q: 0 | 4 5 1 | 2 4 8 9 2 | 1 3 6 6 9 9 9 3 | 0 1 2 4 7 7 7 8 9 4 | 1 2 3 4 6 5 | 4 Key:3 | 0=30 Th...

A: The stem and leaf plot is given.

Q: Consider a bimominal experiment with 2 trials and p=0.4 d. Find the probability of at least one succ...

A: It is given that n = 2 and p = 0.4. Therefore, q = 1–p = 0.6.The PMF of binomial distribution is giv...

Q: In a test of the effectiveness of garlic for lowering cholesterol, 48 subjects were treated with ga...

A: Given sample mean = 3.2Sample standard deviation = 16.8The 95% confidence interval has 0.975 area to...

Q: Hello, I am completely stuck on finding frequency distributions. I do not understand the process can...

A: Given data set is17.7, 28.7, 19.2, 27.9, 33.5, 22.3, 22.4, 44.9, 26.5, 18.3, 27.7, 31.8, 23.8, 28.6,...

Q: The lengths of a professor's classes have a continuous uniform distribution between 50.0 min and 52....

A: Solution: We are given that the lengths of a professor's classes have a continuous uniform distribut...

Q: Suppose, according to a 1990 demographic report, the average U. S. household spends $90 per day. Sup...

A: Sample mean = $84.5.Sample standard deviation, s is $14.5.The sample size, n is 30.

Q: Assume that x has a normal distribution with the specified mean and standard deviation. Find the ind...

A: Given:Mean=28Standard deviation=3.4

Q: When choosing an item from a group, researchers have shown that an important factor influencing choi...

A: Note:Hey, since there is multiple question posted, we will answer first question. If you want any sp...

Q: A hypertension trial is mounted and 12 participants are randomly assigned to receive either a new tr...

A: 1.Hypotheses for the test is given below:

Q: According to securelist, 71.8% of all email sent is spam. A system manager at a large corporation be...

A: a)The hypotheses for the test is given below.

Q: please solve the bullet points question. please show me details for the answers and what are the for...

A: Note:Hey there! Thank you for the question. In the last line of Part (iii), nothing is displayed aft...

Q: Number 19.

A: a)It is given that the population mean before treatment is given as 40, population mean after treatm...

Q: A class has 35 students. In how many different ways can five students form a group for an activity?...

A: It is given that N is 35 and r is 5.

Q: Use the standard normal distribution (aka z distribution where mu = 0 and sigma = 1) to determine th...

A: The formula for the values of Z that will give the middle 90% is stated below:

Q: For a standard normal distribution, find:P(z < -2.1)Normal Calculator

A: From the standard normal table, the probability value corresponding with below -2.1 is 0.0179.

Q: Based on a survey, assume that 27% of consumers are comfortable having drones deliver their purcha...

A: A binomial experiment is a discrete probability experiment which is repeated for a fixed number of t...

Q: A random sample of 25 observations yield a mean of 106 and a standard deviation of 12. What is the p...

A: It is given that mean and standard deviation are106 and 12, respectively.By using central limit theo...

Q: Please show TI 84 steps

A: The given data show that the surface roughness of coated interior pipes.

Q: 3. (a) Based on the random sample Y1 = 5.2, Y2 4.6, use the method of maximum likelihood to estimate...

A: Note:The pdf in Part (b) will be fY (y; θ1, θ2) = 1/(θ2 – θ1) if θ1 ≤ y ≤ θ2. We have solved using ...

Q: Find the weighted average of a data set where 10 has a weight of 5, 30 has a weight of 2, and 50 has...

A: It is given that average of data set where 10 has a weight of 5,30 has a weight of 2 and 50 has a we...

Q: Out of a class of 30 students, there are 16 students who study Latin, 21 who study German, and 7 who...

A: From the given information, there are 30 students in a class. The number of students who study Latin...

Q: The number of chocolate chips in a bag of chocolate chip cookies is approximately normally distribut...

A: Solution:a.The 28th percentile for the number of chocolate chips in a bag is obtained below:From the...

Q: The results of a common standardized test used in psychology research is designed so that the popula...

A: Formula for z-score is,

Q: A study group takes a practice statistics exam. They find that the group has a mean score of 80 with...

A: Standard normal distribution:The standard normal distribution is a special case of normal distributi...

Q: Sam computed a 90% confidence interval for μ from a specific random sample of size n. He claims that...

A: Sam computed a 90% confidence interval for µ from a specific random sample of size n.

Q: The town of KnowWearSpatial, U.S.A. operates a rubbish waste disposal facility that is overloaded if...

A: Solution: We are given:

Q: Statistics Question

A: Hypotheses:Denote μ1, μ2 as the true average number of days spent in the hospital for childbirth, by...

Q: A manufacturer knows that their items have a normally distributed lifespan, with a mean of 14.4 year...

A: Given information:Mean, µ=14.4Standard deviation, σ=3.8Sample size, n=23

Q: Give an example of two independent samples. For example in testing whether a new drug works, the tre...

A: There are many applications based on the independent samples in a continuous scale. The independent ...