An examiner knows from past experience, that students who consistently do all their homework have a probability of 0.9 of passing the subject. While students who do not do their homework consistently have a probability of 0.3 of passing the subject. 18. If only 60% of all the students in a class consistently do all their homework, what percentage of the class is expected to pass? i. If one student in the class is selected at random who actually passed the subject, what is the ii. probability that he consistently did his homework ?

Q: A test was given to a group of students. The grades and gender are summarized below.   A B C Total…

A:

Q: Find the probability of getting someone in the 18-21 age bracket or someone who agreed to respond.…

A: From the information given the contingency table is,   Respond Refuse Total 18 - 21 age 67 12…

Q: Find the probability that a student picked at random will be female and right- handed? A random…

A:

Q: An airline knows from experiences that the distribution of the number of suitcases that get lost…

A: Let "X" be the number of suitcases that get lost each week on a certain route.

Q: If one student is chosen at random from those who took the test, Find the probability that the…

A:

Q: According to a 2017 Wired magazine article. 29% of emails that are received are tracked using…

A:

Q: test was given to a group of students. The grades and gender are summarized below   A B C Total…

A: We have to find given probability.

Q: a. If a male passenger is randomly selected, find the probability that he can fit through the…

A:

Q: A test was given to a group of students. The grades and gender are summarized below   A B C Total…

A:

Q: A test was given to a group of students. The grades and gender are summarized below A B C Total Male…

A:

Q: A test was given to a group of students. The grades and gender are summarized below   A B C Total…

A: Given the test result of a group of students. The grades and gender are summarized as Gender A B…

Q: Pollsters are concerned about declining levels of cooperation among persons contacted in surveys. A…

A: The given information is represented in the below table:

Q: Suppose 57% of the population has a college degree. If a random sample of size 770 is selected,…

A: the pdf of normal distribution is = 1/σ * √2π * e ^ -(x-u)^2/ 2σ^2standard normal distribution is a…

Q: A test was given to a group of students. The grades and gender are summarized below   A B C Total…

A: Given data is   A B C Total Male 7 5 8 20 Female 16 19 10 45 Total 23 24 18 65

Q: An opinion poll asks a sample of 1000 adults whether they favor giving vouchers for education. If…

A: From the provided information, Sample size of adults (n) = 1000 48% of the population favours the…

Q: If one student is chosen at random from those who took the test, find the probability that the…

A: There are totally 71 students taken the test in which 19 males students got grade 'B' from the 32…

Q: Suppose in a local Kindergarten through 12th grade (K - 12) school district, 53 percent of the…

A: From the given information, n=300 and p=0.53.

Q: An airline knows from experiences that the distribution of the number of suitcases that get lost…

A: Let "X" be the number of suitcases that get lost each week on a certain route.

Q: Given that the probability of a company having a section in the newspaper is 0.43, and the…

A:

Q: weight of 810 pounds or more? Which of the following connects the probability of the random variable…

A:

Q: A company employs the following workers:   Part-time Full-time Casual Total Men 12 76 25 113 Women…

A:

Q: A test was given to a group of students. The grades and gender are summarized below   A B C Total…

A: Given: Total number of students=57Number of Female=23Number of female got B=2Number of students got…

Q: Suppose that the proportions of blood phenotypes in a particular population are as follows: A B АВ…

A: We have given that,  The proportions of blood phenotypes in a particular population are as follows:-…

Q: A test was given to a group of students. The grades and gender are summarized below   A B C Total…

A: P(A|B)= P(A∩B)P(B)

Q: A test was given to a group of students. The grades and gender are summarized below   A B C Total…

A: Given,   A B C Total Male 16 13 15 44 Female 3 4 20 27 Total 18 17 35 71

Q: he average weight of a Coastal male Grizzly Bear is approximately normal with E(x) =795 pounds and…

A:

Q: 10 14 41 Female 6 5 3 14 Total 23 15 17 55 If one student is chosen at random from those who took…

A: Probability indicates the chances of occurring an event. It lies between 0 and 1. Probability of an…

Q: A test was given to a group of students. The grades and gender are summarized below   A B C Total…

A:

Q: An airline knows from experience that the distribution of the number of suitcases that get lost each…

A:

Q: Suppose there is a 14.1% probability that a randomly selected person aged 30 years or older is a…

A:

Q: A test was given to a group of students. The grades and gender are summarized below   A B C Total…

A:

Q: Suppose that the proportions of blood phenotypes in a particular population are as follows: A B АВ…

A:

Q: The analyst determines that the probability of sales exceeding 150,000 was 0.331, the probability of…

A:

Q: Suppose 40% of all vehicles are trucks. Of the next ten vehicles that pass on the road, what is: a)…

A: Given that probability of observing a truck=40% =0.40 Probability of not being a truck= 1- p=q=…

Q: A test was given to a group of students. The grades and gender are summarized below   A B C Total…

A:

Q: Pollsters are concerned about declining levels of cooperation among persons contacted in surveys. A…

A: The age bracket table is shown below:

Q: A random sample of n = 64 scores is obtained from a normal population with µ = 30 and σ = 10. What…

A:

Q: Pollsters are concerned about declining levels of cooperation among persons contacted in surveys. A…

A: For the given data Find p( 18-21 or agreed ) = ?

Q: Pollsters are concerned about declining levels of cooperation among persons contacted in surveys. A…

A:

Q: A test was given to a group of students. The grades and gender are summarized below   A B C Total…

A: The number of students got A grade is 25.

Q: Pollsters are concerned about declining levels of cooperation among persons contacted in surveys. A…

A: From the given information, it can be observed that

Q: R. H. Bruskin Associates Market Research found that 40% of Americans do not think that having a co…

A: Given data, p=40%=0.40 n=5 P(X<=3)=?

Q: A psychology teacher teaches two statistics classes back-to-back, lecture L1 at 09:00 am and lecture…

A: Given that a) The  proportion of the CL1 lecture are goodb) Suppose that CL1 Lecture was good, What…

Q: Pollsters are concerned about declining levels of cooperation among persons contacted in surveys. A…

A: Given information can be tabulated as shown below.

Q: test was given to a group of students. The grades and gender are summarized below   A B C Total…

A: From the table, we see that 21 students got B.  Among them, 3 were female and got B.

Q: It is estimated that, during the past year, 28% of all adults visited a therapist and 43% ef all…

A:

Q: A test was given to a group of students. The grades and gender are summarized below   A B C Total…

A: Given table is,   A B C Total Male 8 6 15 29 Female 9 4 11 24 Total 17 10 26 53

Q: The table lists the drinking habits of a group of college students.    Non-Drinker Regular Drinker…

A:

Q: A random sample of n=16 scores is obtained from a normal population with μ=38 and σ=8. What is the…

A: Let us consider, X represents a normal population with μ=38 and σ=8.  Thus, X~N(38,82). We have a…

Q: Suppose that 30 percent of an adult population have an infectious disease and 40 percent have a…

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.