100 patients with lung cancer and 100 patients without lung cancer were enrolled in a study. They were questioned about tobacco use over the past 20 years. 80 of the lung cancer patients reported smoking as did 20 of the patients without cancer.  Find the odd ratio and interpret that number

Q: Then, the relative frequency of the class 22 – 34 is -

A: # Given frequency tabulated data  then to find relative frequency of class(22-34)??

Q: In order to have a margin of error of 2%, people should be surveyed.

A: we are given that 24% people consider summer as their favourite season (p) = 0.24 to find  number of…

Q: Suppose I interview a random sample of 300 adults and ask them to assess their health, from “Poor”…

A:

Q: A Pew Research study estimates that 803 million people live in poverty today, after the 2020 global…

A: It is given that 803,000,000 people live in poverty today, out of 7,754,000,000 people worldwide.

Q: Suppose that a total of $10 million will be allocated to the first three finishers in the…

A: Given that, a total of $10 million will be allocated to the first three finishers in the horse race…

Q: The men hired by a certain city police department must be at least 69 inches tall. If the heights of…

A: Given μ=70 inches and σ=2 inches We need to find, Z=X-μσ=69-702=-12=-0.5 Now to find the required…

Q: there are 347 people that take a survey and assume that 112 of them are women. what percentage of…

A: The percentage of females in the survey is calculated below:

Q: A survey shows that 3/5 Australian adults are overweight and 1/10 Australian adults are obese. What…

A:

Q: When 345 HS students were surveyed, 125 said that they completed a driver's education class prior to…

A:

Q: Suppose the profit the Honda dealership makes on the next 5 Accords it sells are: 443, 1,058, 766,…

A:

Q: In a class with 25 student there are 6 student very talentet in the subject of art. What percentage…

A:

Q: Suppose that the results of a survey show that 57% of people consider summer as their favorite…

A: From the provided information, Margin of error (E) = 6% that is 0.06 57% of people consider summer…

Q: A report says that the average amount of time a 10-year-old American child spends playing outdoors…

A: A report says that the average amount of time a 10-year-old American child spends playing outdoors…

Q: A researcher wished to estimate the difference between the proportion of users of two shampoos who…

A: Based on the provided information, the known values are: p1=78400=0.195p2=92500=0.184n1=400n2=500 In…

Q: Of 5,040 cellphones, 227 are found to be defective. What angle of a circle (in degrees) would show…

A:

Q: If the sampled tilapia number 500, how many of these are expected to weigh between 330 and 394…

A: Given that mu =370.2 , s.d = 32.7

Q: In a survey of 1536 adults, 36% responded "yes" to the survey question. How many adults answered…

A: From the provided information, Sample size (n) = 1536 36% responded “Yes” to the survey question.…

Q: If 2% of the components produced by a machine are defective, what is the average number of defective…

A:

Q: If a coin is flipped 150 times and the number of Hs is 25. Compute the proportion of Hs. Round to…

A: We have given that,  Favorable cases (X) = 25 and sample size (n) = 150 Then,  We will find the…

Q: What is the proportion of the total incidence of CHD in smokers that is attributable to smoking? Use…

A: Given Information: Total no. of participants=4560No. of Total smokers=2249No. of smokers having…

Q: A survey of Hoosiers found that 57% are Pacers fans, 44% are Colts fans, and 35% are Pacers fans but…

A: Let P= Pacer fans  C= Colt fans So, P(P)= 57% = 0.57  P(C)=44%=0.44 So, 57% - 35%=22%= 0.22 are…

Q: What percentage of students guessed between 41 and 44

A:

Q: There are 1,000 students in a college. Out of 20,000 in the whole university, in a study 200 were…

A:

Q: among the 1018 respondents, 428 said that pesticides are "not at all harmful."  What percentage of…

A: Total number of respondents = 1018Total number of respondents said that pesticides are "not at all…

Q: The golden ratio is commonly called the Greek ratio. O True O False

A:

Q: Suppose that the results of a survey show that 46% of people consider summer as their favorite…

A: The following information is available in the question

Q: It was recently estimated that uninsured vehicles outnumber insured ones by about seven to six. If…

A: as per information : uninsured vehiclesinsured vehicles=76 assume  No of uninsured vehicles=7x No of…

Q: . what percentage of females will be forced to look for new pa

A:

Q: Based on the information, what is the cumulative relative frequency for the 50.2% - 59.7% change in…

A: It is given that Cumulative frequency for class 50.2-59.7 is = 45 Total frequency = 50

Q: Suppose you have a piece of wire of length 18 inches, where will you cut the wire in order to…

A: The length of the piece of wire is 18 inches.

Q: A survey of 1000 U.S. adults found that 33% of people said that they would not get any work done on…

A: From the given information, P = 33% and n = 1000  Formula for confidence interval for true…

Q: One hundred operations were performed during the past month. Of these, 20 were orthopedic…

A: The ratio for surgical categories are obtained as follows:

Q: A school knows that 38% of its incoming students own a smart phone and a tablet. What percent of…

A: Let S be the set of students with smartphone and T be the set of students with tablet Percentage of…

Q: What percentage of the widow Students are female

A:

Q: On a test, Tarina missed 8 out of 52 questions. What is the ratio of correct to incorrect answers on…

A: Given that:  Total number of questions on test= 52  Number of missed questions = 8 Find the ratio of…

Q: In a sample of 169 students, 16 said they have donated blood. What percent of the students have…

A: Given that, In a sample of 169 students, 16 said they have donated blood.

Q: The Humane Society is interested in finding out how many households in America have at least one…

A: The provided information are: Confidence level = 95% = 0.95 Margin of error (E) = 4% =0.04 From the…

Q: Suppose that the results of a survey show that 53% of people consider summer as their favorite…

A: Given that Results of a survey show that 53% of people consider summer as their favorite season.…

Q: On a recent survey, 60% of people said they preferred walking to running. If 540 people liked…

A: Number of people who liked walking = 540 Percentage of people who like walking = 60%

Q: If a coin is flipped 225 times and the number of Hs is 75. Compute the proportion of Hs. Round to…

A:

Q: What percentage of the widow students are  female

A: Total widowed students=2+3=5Total female students who are widowed=3

Q: Suppose that the result of a public opinion poll shows that just 10% of people would be willing to…

A:

Q: According to the results of a survey, 40% of 396 Leople indicated that American football is their…

A: Given Data: p^=0.4   Margin of error=0.04   Assuming significance level of 0.05 z0.05/2=1.96

Q: Suppose that the results of a survey show that 40% of people consider summer as their favorite…

A: Given Data: Let 'n' be sample size p^=0.4 Margin of error=0.04   Assuming level of significance to…

Q: In a group of 50 children, 11 cannot swim. What percentage can swim?

A: Givenno.of children in a group=50no.of children cannot swim=11

Q: 72% of Americans said that they plan to travel in 2021, and 9% of those who plan to travelintend to…

A: For example we take 100 Americans 72% of Americans said that they planned to travel in 2021, 72% =…

Q: why our hands are considered as golden ratio?

A: The golden ratio is defined as ab=a+ba=1.618 In human hand (generally) if we see the ratio of…

Q: time a 10-year-old American child spends playing outdoors per day is between 19.28 and 24.08…

A: Given Data Lower limit = 19.28 upper limit = 24.08

Q: Suppose that the results of a survey show that 28% of people consider summer as their favorite…

A: Given Data: p^=0.28 Let 'n' be the random sample Margin or error=0.06   Let us assume level of…