An interdepartmental task force is being formed to investigate an increase in violent crimes. 1/5 of the task force will be police officers from the local precinct. 1/4 will be ATF agents, and the remaining 22 will be from the FBI. How many people are participating in the task force?

Q: What proportion of students studied more than 4 hours?

A: Given that Total number of students = 240 Number of students who studied more than 4 hours = 50

Q: A recent drug survey showed an increase in the use of drugs and alcohol among local high school…

A: Provided data are, x1 = 65   n1 = 100 x2 = 60   n2 = 100

Q: From the analysis of students’ marks, Mr Adam decided to do one-to-one consultation with his…

A: If we consider that the students should bring the marks above the median, they are only exempted…

Q: How many patients were lost to contact?

A: The given table shows the year of death, year of last contact, time and number at risk, number of…

Q: Use the table below and assume a population of 317 million. How much greater is the risk of death…

A:

Q: If the Syracuse men's basketball team won 18 games and lost 10, and the Syracuse women's basketball…

A:

Q: An IQ score for which 15% of the population has a higher score and 85% have a lower score…

A:

Q: Which types of car were driven by more than 623 respondents in the survey?

A: Here use proportion from given pie chart And calculate no of people drive that type of car

Q: An industrial/organizational psychologist wants to improve worker productivity for a client firm,…

A: The following information is given: n=250,  M=9,  s=10.4 Let X denote the number of hours legal…

Q: In a shipment of 500 light bulbs, 25 of them were broken. What percentage of the light bulbs were…

A: Given ,  In a shipment of 500 light bulbs , 25 of them were broken . We have to find the  percentage…

Q: A survey of 150 people revealed that 115 people like ketchup on their hot dogs, 85 people like…

A: Concept of General Addition Rule: For any two events A and B the General Addition Rule state that:

Q: . In Exton School, 60% of the boys play football and 36% of the boys play ice hockey. Given that40%…

A: Let us define the events as, A: Boys who play football.B: Boys who play ice hockey. From the given…

Q: An industrial/organizational psychologist wants to improve worker productivity for a client firm,…

A: Solution: From the given information, the point estimate is M=2.0, the standard error is 5.1 hours…

Q: The Widington College program is considering buying a Scanner machine among 5 (five) types, namely…

A: The Widington College program is buying a Scanner machine among 5 (five) types, the SC1, SC2, SC3,…

Q: Lake Richmond about 5 years ago. The following table shows the approximate number of tiger gars…

A: Given, year (x)  = independent variable  The tiger gar (y) = dependent variable

Q: In a village actually invaded by anthrax, 65% of the gouts were attacked and 90% have been…

A:

Q: If you were asked to develop a training program for taxicab drivers, how would you do it? How would…

A: Most of the organizations conduct trainings to improve the skills of employees.

Q: If 50% of a population take coeffeee and 100 investigators examine 10 individuals each to study…

A:

Q: We made a survey with the number of people in a household and the number of times they get sick…

A: Solution: Let x be the number of people in a household  y be the number of times they get sick in a…

Q: Say that there are five populations, and we need to test for difference of population means.  If we…

A: Say that there are five populations, and we need to test for difference of population means. We test…

Q: Two factory plants are making TV panels. Yesterday, Plant A produced 10,000 panels. Ten percent of…

A:

Q: 4. A farmer estimated that there were 25 gallons of water left in a tank. If this is an…

A:

Q: 35% of a sample of employees are vaccinated.if 390 are not vaccinated, how many are vaccinated

A:

Q: How many success in the sample? How many failures in the sample? ? What size sample does the…

A: Answer:-  Given, n=1800

Q: A survey reported that 10% of 1800 employees favored a new insurance program. How many employees…

A:

Q: A sample of 125 light bulbs contained 3 defective bulbs. How many defective bulbs would you expect…

A: To calculate the number defective bulbs in the batch of 3000 light bulbs. A sample contains 125…

Q: a) The University of the East Europe is interested in the overall performance of its students in the…

A: (a) The university of the East Europe is interested in the overall performance of its students in…

Q: In clinical trials, 60 percent of new cancer drugs advance from Phase I to Phase II, 25 percent…

A:

Q: The purchased cost of a shell-and-tube heat exchanger with 100 m2 of heating surface area was…

A: First determine the price of 200 m2 heat exchanger. Now use the Marshall Swift Index to get the cost…

Q: A sample of 125 light bulbs contained 3 defective bulbs. How many defective bulbs would you expect…

A: Given infromation:A sample of 125 light bulbs contained 3 defective…

Q: In a recent survey of 180 people who drink coffee or tea, it was found that 137 drink coffee and 74…

A:

Q: of the population have high school scores less than 77?

A:

Q: Out of 1000 people surveyed, 850 said they like chocolate.  What proportion of people surveyed said…

A: Given: The total number of people surveyed is 1000 850 people said they like chocolate We have to…

Q: At the beginning of 2018, a survey showed that a country with a total land area of 500,500 square…

A: Given that,  at the beginning of 2018, a survey showed that a country with a total land area of…

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: College instructors who adopt this book are (we hope!) twice as likely to continue to use the book…

A: Consider the provided question, Let the problem be modeled as Markov chain with states Users (U) and…

Q: What proportion of the general population has an IQ of 70 or less?

A: It is an important part of statistics. It is widely used.

Q: The Widington College program is considering buying a Scanner machine among 5 (five) types, namely…

A: a) Excel Procedure: Enter the given data in Excel sheet>Data>Data Analysis>Select ‘Anova:…

Q: a survey showing the popularity of the current governor gives an approval rating between 42% and…

A:

Q: At a certain college 40% of the students are male, and of those, 15% smoke cigarettes. What is the…

A: Given in a college percentage of male = 40%Among males percentage of smokers = 15%.we can say…

Q: How many performers earned exactly 1 star?

A: Given: Total number of performers, N = 140 Percentage of performers got 1 star = 15%

Q: Ross White recently opened a landscaping division , that advises home owners and businesses on…

A: Given: Xynic weight = 20kg Nitrogen = 20% of 20 kg = 4kg Phosphorus = 5% of 20 kg = 1kg Potassium =…

Q: A firm produces articles of which 0.1 percent are usually defective. It packs them in cases each…

A:

Q: In a series of houses actually invaded by smallpox, 70% of the inhabitants are attacked and 85% have…

A: Suppose A & B be two events. Then we know, (A∪B)=(A)+(B)-(A∩B). Consider from the problem that,…

Q: Suppose the prevalence of "dance fever" at a college is 40% among women and 10% among men. If there…

A: Given that the prevalence of dance fever among women is 40%. The prevalence of dance fever among men…

Q: Assuming a group has one uniform rate, 40% of the group receives a 10% rate increase and 60% of the…

A: We will consider that the group has total 100 members and each member of the group has a uniform…

Q: It has been reported that the average credit card debt for college seniors at the college book store…

A: Given: Sample size, n = 50 Sample mean,   Standard deviation,

Q: If 7 prunes provide 10% of vitamin A needed daily, what percent of the daily percent of vitiman A is…

A: In mathematics, a percentage is a number or ratio expressed as a fraction of 100. It is often…

Q: It was recently estimated that uninsured vehicles outnumber insured ones by about 7 to 6. If there…

A: Given that uninsured vehicles outnumber insured ones by 7 to 6

Q: A survey shows that 3 out of 4 of those drink coffee in a town with a population is 7900 adults how…

A:

Estimation

A new framework of data analysis where the new statistical methods are used for interpreting the results and analyzing the data is known as estimation in statistics.