A sample of 500 large companies showed that 120 of them offer free psychiatric help to their employees who suffer from psychological problems. If one company is selected at random from this sample, what is the probability that this company offers free psychiatric help to its employees who suffer from psychological problems? What is the probability that this company does not offer free psychiatric help to its employees who suffer from psychological problems?

Q: A large scale study conducted over a one year period has shown that break-ins at home occur about 6%…

A:

Q: About 13% employed adults in the US held multiple jobs. Random sample of 74 employed adults is…

A: given, p =0.13 n = 225 p^ = 0.071   To find, P (x < 0.071) = ?

Q: 40% of the managers in an international company have traveled abroad, 50% of them can speak foreign…

A: Let event T:Manager travelled abroad event F:Manager can speak foreign language. PT=0.4 therefore…

Q: A survey conducted on a randomly selected day for an ice cream truck showed that 68% of customers…

A: The conditional probability is computed as PAB=PA∩BPB

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A: Let V be the event that selected person voted in the last school board election, R be the event that…

Q: The probability that a student comes from a two-parent home is 0.75 and the probability that a…

A:

Q: what is the probability that a person who could give up her cell phone could also give up

A: Answer is  0.31

Q: Eleven percent of American children (ages 4 to 17) have Attention Deficient Hyperactivity Disorder…

A:

Q: In a study of blood donors, 125 were classified as group O and 195 had a classification other than…

A: The objective of this question is to find the probability that a blood donor will have group O…

Q: Data compiled by Berks County on the number of convicted shoplifters in 2019 revealed that 62% were…

A: Let M and F be the event represent that number of convicted shoplifter are male amd female with…

Q: An insurance company needs to develop a new bankruptcy policy in a new city. It was observed an…

A:

Q: A recent study suggested that 70% of all eligible voters will vote in the next presidential…

A: Given Information: 70% of all eligible voters will vote in the next presidential election i.e., p =…

Q: A new drug is being tested that causes a serious side effect in 5 out of 20 patients. Fifteen…

A:

Q: study has shown that 65% of students at some time in their college career have skipped buying…

A: Given data, 65% of students at some time in their college career have skipped buying required…

Q: A study showed that ​69.7% of occupants involved in a fatal car crash wore seat belts. Of those in a…

A:

Q: Suppose that 9% of college undergraduates suffer from a psychological disorder. What is the…

A: Let p be the probability that an undergraduate has a psychological disorder. Given that p = 0.09 Let…

Q: Of all 40-year-old women, 1% have breast cancer. If awoman has breast cancer, a mammogram will give…

A:

Q: It is estimated that 30% of Canadians with age between 60 and 65 had smoked for a long period of…

A:

Q: Suppose that 34% of the population has mood swings, allergies, irritability and depression (MAID)…

A: P(Maid ∩ Dairy) = 0.34P(Dairy) = 0.80P(Maid ∪ Dairy) = 0.70 P(Maid U Dairy) =…

Q: For a recent year, 31.9% of Americans living below the poverty level were not covered by health…

A: 31.9% of Americans living below the poverty level were not covered by health insurance.so,…

Q: A certain prescription drug is known to produce undesirable side effects in 55% of all patients who…

A: Given that the probability of undesirable side effects is = 55%= 0.55  So the probability of not…

Q: The risk of a hematoma among alcoholics without cirrhosis of the liver is 24%. Suppose we observe 7…

A:

Q: 70% of iPhone batteries are made from China and 30% from Korea. The failure rates within a year for…

A: Let A - iPhone batteries are made from China A' - iPhone batteries are made from Korea. D - battery…

Q: United Blood Services is a blood bank that serves more than 500 hospitals in 18 states. According to…

A: 43% of people have type O blood. 15% of people have Rh- factor. 52% of people have type O or Rh-…

Q: In a study of 460,112 cell phone users, it was found that 104 developed cancer of the brain or…

A:

Q: Evaluate the Arithmetic Mean, Median, Mode, Standard Deviation ,Geometric mean ,Harmonic mean,…

A: Marks obtained by students are: 15, 25, 45, 25, 75, 95, 65, 76, 23, 56, 79, 89, 78, 67, 56, 45.…

Q: According to the Centers for Disease Control, the probability that a randomly selected citizen of…

A: According to the Centers for Disease Control, the probability that a randomly selected citizen of…

Q: It is known that 60% of customers will need additional maintenance on their vehicle when coming in…

A: We have given that  Sample size n =50 Sample proportion p^=60%=0.60

Q: Your favorite soccer player is playing in the world cup and the match has ended in a tie. As the…

A: P(Favorite player)=P(F)=0.8%, P(Before favourite Player )=P(B)=0.60%

Q: 80% of U.S. drivers over the age of 30 have had a speeding ticket and 55% of those have also been in…

A: Given,         Pspeeding ticket=0.80         Paccident while behind the wheel=0.55

Q: An observer stands at a highway overpass and counts the automobiles that pass by. When he sees a red…

A:

Q: An airline tracks data on its flight arrivals. Over the past six months, 70 flights on one route…

A: The general formula of probability is: Probability=Number of favourable outcomeTotal number of…

Q: What is the probability of selecting one person at random who is Female and Married?

A: