In a study of helicopter usage and patient survival, among the 56,182 patients transported by helicopter, 183 of them left the treatment center against medical advice, and the other 55,999 did not leave against medical advice. If 40 of the subjects transported by helicopter are randomly selected without replacement, what is the probability that none of them left the treatment center against medical advice? The probability is 0 (Round to three decimal places as needed.)

Q: A study indicates that 73% of cars have have satellite radio. You randomly sample 8 cars. Find the…

A: Binomial distribution: The binomial distribution gives the probability of number of successes out of…

Q: A random sample of 100 blue-collar employees at a large corporation are surveyed to assess their…

A: Given: Sample size (n) = 100 Probability of success (p) = 0.60 Let X ~ Bin (100, 0.60)

Q: The percentage of female Americans 25 years old and older who have completed 4 years of college or…

A:

Q: A certain group of women has a 0.37 ​% rate of​ red/green color blindness. If a woman is randomly​…

A: The probability of compliment of an event A, is defined as P(A’) = 1 – P(A).

Q: A survey reported in USA Today indicates that 65% of small business owners favor drug testing for…

A: The probability of small business owners favoring drug testing for their employees is, The sample…

Q: In one study of calls to 911 in Los Angeles, it was found that 85% of the calls were not…

A: Solution: From the given information, the proportion of the calls were not emergencies is p=0.85 and…

Q: According to the U.S. Coast Guard, sixty-five percent of boating accidents occur in light wind…

A: From the provided information, Sample size (n) = 20 Sixty five percent of boating accidents occur in…

Q: A survey showed that 73% of adults need correction ( eyeglasses, contacts, surgery,etc.) for their…

A: Let us denote X= the number of persons who need correction for their eyesight. n= number of trials =…

Q: 13 percent of the patients in a study reported previous episodes of stroke or transient ischemic…

A: Solution: Given information: n= 70 Sample size  p= 0.13 Population proportion.

Q: Find the probability that more than 20% of the sample are from poverty-level households.

A: Given,sample size(n)=300sample proportion(p^)=0.22

Q: A survey showed that 82% of adults need correction​ (eyeglasses, contacts,​ surgery, etc.) for their…

A: 82% of adults need correction​ (eyeglasses, contacts,​ surgery, etc.) for their eyesight. 19 adults…

Q: About 0.5% of adults have nut allergy. The test correctly identifies 94% of the time adults with…

A:

Q: In a police report submitted by the Cordillera Police Station, poverty is the main reason mentioned…

A: Solution: Let X be the number of crimes resulted from poverty as the main reason for committing…

Q: Refer to the sample data for pre-employment drug screening shown below. If one of the subjects is…

A: The row and column totals are,   Positive test result Drug Use Is Indicated Negative test results…

Q: At a cell phone assembly plant, 82% of the cell phone keypads pass inspection. A random sample of…

A:

Q: Atlantic Airways flights were late (arrived or departed 15 minutes late or more). A random sample of…

A: We have given that  Number of trials n=140 Success of probability p =20.4%=0.204 We use normal…

Q: In a survey of consumers aged 12 and​ older, respondents were asked how many cell phones were in use…

A:

Q: A survey showed that 81​% of adults need correction​ (eyeglasses, contacts,​ surgery, etc.) for…

A:

Q: what is the probability all three would be smokers?

A: Let , X be the number of smokers Here , X→B(n=3 , p=0.20) The probability mass function of X is ,…

Q: In a study of car accident fatalities that involved impaired drivers, it was found that 535 drivers…

A: Solution: From the given information, number of drunk drivers is 535 and the number of drugged…

Q: A labor statistician claims that 6% of the labor forces will be laid off likely  to pandemic impact.…

A: Solution: According to a labor statistician's claim, 6% of the labor forces will be paid off. Let p…

Q: a study 39% of adults questioned reported that their health was excellent. a researcher wishes to…

A: p =0.39 n = 10 Sample proportion = 3/10 = 0.3

Q: A survey showed that 81% of adults need correction (eyeglasses, contacts, surgery, etc.) for their…

A: Obtain the probability that no more than 1 of them needs correction for their eyesight. The…

Q: In an experiment to study the relationship of hypertension and smoking habits, the following data…

A: make a table for the given data    non smoker moderate smoker heavy smoker total hypertension…

Q: A study determined that 18% of a population use a certain brand of laundry detergent. what is the…

A: It is given that, A study shows that 18% of a population use a certain brand of laundry detergent…

Q: In a survey of Canadian nurses who worked more than 45 hours per week, it was found that 321 nurses…

A: Given Data n(nurse under 35 age)=321 n( nurse between 35 to 55 age)=403   Total=321+403=724

Q: In a study, 42% of adults questioned reported that their health was excellent. A researcher wishes…

A: Let us denote X=the number of people with excellent health.n=sample size=13p=probability of…

Q: In a study of helicopter usage and patient survival, among the 50,073 patients transported by…

A: There is a total of 50073 patients

Q: Suppose that asthma affects 1 in 20 children in a population. You take an SRS of 50 children from…

A: It is given that asthma effects 1 in 20 children in a population. Let the random variable X denotes…

Q: In a survey of consumers aged 12 and older, respondents were asked how many cell phones were in use…

A: Obtain the probability that his/her household has four or more cell phones in use. The probability…

Q: One survey showed that 59% of Internet users are somewhat concerned about the confidentiality of…

A: From the given information we find the probability.

Q: A survey showed that 80% of adults need correction (eyeglasses, contacts, surgery, etc.) for their…

A: n=16P=0.8

Q: What is the probability that in a random sample of 440 voters, less than 48.8% say they will vote…

A:

Q: A random sample of 270 homes was taken from a large population of older homes to estimate the…

A: Given: A random sample of 270 homes was taken from a large population of older homes to estimate the…

Q: A certain group of women has a 0.210.21​% rate of​ red/green color blindness. If a woman is…

A: Given DataPercentage of women having red/green color blindness = 21%Probability of women having…

Q: A certain group of women has a 0.29​% rate of​ red/green color blindness. If a woman is randomly​…

A: Given, A certain group of women has a 0.29​% rate of​ red/green color blindness. Let P(A) = 0.29% =…

Q: In a survey of consumers aged 12 and older, respondents were asked how many cell phones were in use…

A:

Q: A survey reports that 53% of college students use Google as their search engine.  If 100 students of…

A:

Q: A study showed that in​ 1990, 47​% of all those involved in a fatal car crash wore seat belts. Of…

A:

Q: A survey showed that 84​% of adults need correction​ (eyeglasses, contacts,​ surgery, etc.) for…

A: The density function of binomial distribution is:

Q: In 2014, 78.9% of US households spoke only English at home. What is the probability that at least 12…

A: Given that 78.9% of US households spoke only English at home.

Q: According to the USA Today (March 18, 1997) of 5 million workers in the general workforce, 6.8%…

A: There is 22.5% were cocaine users, and 54.4% marijuana users. Then the other drug users is…

Q: recent survey found that 60% of all adults wear sunglasses for driving. In a random sample of 10…

A: GIVEN DATA P9wear sunglasses) = p = 0.60sample size(n) = 10x = no. pf people wear sunglassesP(x=X) =…

Q: 27.4% of males and 22.8% of females never eat breakfast. Suppose that random samples of 200 men and…

A: given: The percentage of men never eat breakfast = 27.4% The percentage of women never eat breakfast…