To receive a particular professional designation, an individual must pass a specific professional exam.  A preparatory course is available, and individuals who take the preparatory course, pass the professional exam 65% of the time, while individuals who do not take the preparatory course only pass the exam 30% of the time.  Suppose 55% of individuals who take the professional exam have taken the preparatory course.   What percent of individuals who take this exam pass?   The percent of individuals passing is  Blank 1. Calculate the answer by read surrounding text. percent.   Do NOT use the % sign as part of your answer, and do NOT round your answer.

Q: 4. If the sale of ice cream and pizza are independent, then as ice cream sales decrease by 60…

A: Given that  The sale of ice cream and Pizza are independent . The ice cream sales decrease by 60%…

Q: A comprehensive survey released by a college reports that the true proportion of all students at the…

A:

Q: a. The proportion of Pennsylvanians with a high school diploma is equal to 0.83. b. The proportion…

A:

Q: A survey of 62 men found that 12 have a social media account. Another survey of 57 women found that…

A: Men are taken as group 1. Women are taken as group 2.   Given: n1=62x1=12n2=57x2=40α=0.07

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: In fall 2014, 34% of applicants with a Math SAT of 700 or more were admitted by a certain…

A: Let A be the event that student had Math SAT of 700 or more Therefore, PA=0.36 find The probability…

Q: The manager of a big corporation finds out that on average, 40% of sick days are logged on Mondays…

A: Employees register 40% of sick days on Mondays and Fridays.  Now, we know, if Saturday and Sunday…

Q: 5. What percent of the sophomores watch TV for at least 15 minutes per night?

A: Following statistics is given for TV time   Minimum = 0 minutes Q1 = 15 minutes Q2 = 60 minutes Q3 =…

Q: The International Brotherhood of Slide Whistlers wants to conduct a survey to find what proportion…

A: Let COnfidence interval be 90% Zc=1.645 E=3%=0.03 p=0.5 n=?

Q: A telemarketer calls people and tries to sell them a subscription to a daily newspaper. On 19% of…

A: Given  A telemarketer calls people and tries to sell them a subscription to a daily newspaper On 19%…

Q: The brand manager for a brand of toothpaste must plan a campaign designed to increase brand…

A: The formula for the sample size is as follows: Here,zα/2 is the critical value at 95% confidence…

Q: At a local Dunkin’ Donuts, a survey showed that out of 1,090 customers eating lunch, 327 ordered…

A:

Q: If 55% of the books have been signed out, what percent of the books have not been signed out?

A: Given that: According to the question, 55 % of the books have been signed out. Signed  out=55…

Q: Suppose in a single month a certain baseball team won 9 games and lost 15. What percent of the games…

A:

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: In a sample of 45 men, 27 said that they had less leisure time today than they had 10 years ago. In…

A:

Q: In fall 2014, 36% of applicants with a Math SAT of 700 or more were admitted by a certain…

A:

Q: A recent study of young executives showed that 30 percent run, 20 percent bike and 12 percent do…

A: Note: Hi there! Thank you for posting the questions. As there are several independent questions,…

Q: Find the percent of increase for the New England Patriots FCI from 2016 to 2017. Team Ticket Other…

A:

Q: 40% of all people have cooties. 30% of all people play pattiecake and have cooties. What percent of…

A: Conditional probability is the chance of occurrence of an event given that another event has already…

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: Two factory plants are making TV panels. Yesterday, Plant A produced 15,000 panels. Three percent of…

A: The given data is: Plant A produced 15,000 panels and 3% are defective  Let Plant B produce x panels…

Q: Find the probability of selecting either a non-smoker or a woman when you select a person at random…

A:

Q: When a law firm represents a group of people in a class action lawsuit and wins that lawsuit, the…

A: Given that

Q: Suppose in a single month a certain baseball team won 3 games and lost 21. What percent of the games…

A: Won=3 gamesLost=21 games∴total games =3+21                           =24winning persentage=324*100%…

Q: When a law firm represents a group of people in a class action lawsuit and wins that lawsuit, the…

A: Type 1 error - Type one error occurs when we reject the null hypothesis when actually it is true.…

Q: In research about the population of a county with 100,000 inhabitants, a sample of 3000 households…

A: According to the provided data, a total of 3000 households were contacted to participate in the…

Q: The sales force at a certain company successfully closed 96 out 200 sales calls

A: It is given that, The salesforce at a certain company successfully closed 96 out of 200 sales calls.…

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

A:

Q: A state legislator wishes to survey residents of her district to see what proportion of the…

A: Answer:-  Given, Margin of error=7%=0.07 Confidence level=0.90 Let P=0.5 ( as we don't have sample…

Q: A recent polls show that 61% of adult Americans are comfortable with the legalization of marijuana,…

A:

Q: a skeptical paranormal researcher claims that the proportion of Americans that have seen a UFO, p,…

A: It is given that the skeptical paranormal researcher claims that the proportion of Americans that…

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: In a survey at a local university 52% of students say that they less than the recommended eight…

A: The problem concerns working out the percentages and interpreting .

Q: pproximately 21% of music lovers like Country Music. Of those who do, 97% do not have mild brain…

A: Given Data: P( like country music)=0.21 P( do not have mild brain damage| like country music)=0.97

Q: If Amy spends the whole day swimming every Friday, and only Friday, what percentage of her days in a…

A: Amy spends day of friday to swim.  1friday occurs within a weak.  Since 15 Fridays Will come in 15…

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: In research about the population of a county with 100,000 inhabitants, a sample of 3000 households…

A: The number of households not willing to participate in the survey is 1200.

Q: A survey found that in a sample of 100 families, 37 owned cats. A survey done 5 years ago found that…

A:

Q: In fall 2014, 34% of applicants with a Math SAT of 700 or more were admitted by a certain…

A: All the given data is shown in the tree diagram

Q: In fall 2014, 38% of applicants with a Math SAT of 700 or more were admitted by a certain…

A: LetA - Percent math S A T score of less than 700 or more in all applicants.B – Percent math SAT…

Q: What percentage of people eat fruits and vegetables and abstain from smoking, but do not partake in…

A:

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

A:

Q: A bicycle manufacturer observes that the number of bike paths in a city affects the number of…

A: here take  x= no. of bike paths y= no. of bicycle sold here compute the regression line and then for…

Q: C1. A computer spam filter is 98% effective at sending spam emails to my junk folder, but will also…

A: Solution

Q: D. 60 percent of all children spend at least how many hours per day unsupervised? hours.

A: Given that  X ~ N ( μ =  3 , σ = 1.5 ) μ = 3  , σ= 1.5 Formula for Z-score Z = ( X - μ ) / σ

2-Proportion Test

In a 2-proportion test, two separate proportions are measured at the same time, and their similarity is evaluated. It is also known as a 2-proportion z-test, and a comparison of two different proportions is done in this method.