In recent study of nurses of a local hospital, eight hundred and twenty four said that they prefer white scrubs while one thousand seven hundred and twenty nine said they prefer blue scrubs. If one nurse from this study is selected at random, find the probability the nurse prefers blue scrubs.    a. 0.3230   b. 0.3069   c. 0.6772   d. 0.3228   e. 0.5245

Q: A group of children visited a zoo during a pre-school celebration week. A sampling of children was…

A: Total 165 children prefer Lion.  Among those 165 children, 90 are boys.

Q: In a class of students, the following data table summarizes how many students play an instrument or…

A:

Q: A group of coffee drinkers were asked if they prefer their coffee black or with cream and/or sugar…

A: There are 26+64+12+23 = 125 respondents. Out of them 12 drinks black decaf coffee.

Q: 6. A class for engineers consists of 25 industrial, 10 mechanical, 10 electrical and 8 civil…

A: The answer is attached below,

Q: b) There are two cities with the following percentages of baseball and hockey fans: City Baseball…

A: Let; XA: Number of baseball fans in City A out of the 100 residents surveyed XB: Number of baseball…

Q: In a class of students, the following data table summarizes how many students have a brother or a…

A:

Q: about 13% of the population if left-handed. if three people are randomly selected, what is: the…

A:

Q: In a class of students, the following data table summarizes how many students have a brother or a…

A: From the provided information,   Has a brother Does not have a brother Total Has a…

Q: In a certain year, 23.5% of all light vehicles were light trucks, 7.0% were SUVs, and 69.5% were…

A: Given data:   The given percentage of light trucks is P(T)=23.5%=0.235.The given percentage of SUVs…

Q: A study contains 31 women and 24 men. If 3 subjects are randomly selected without replacement, what…

A: Solution-: We have, Number of women =31, Number of men =24            Total number of persons (Women…

Q: Q3) A statistics class for engineers consists of 25 industrial, 10 mechanical, 10 electrical, and 8…

A: Given data: Total number of engineers = 25+10+10+8 = 53

Q: Consider a population of snakes in which 70% are female. If you randomly sample four snakes, what is…

A:

Q: 5) People were asked if they prefer Pepsi or Coke. The results are in the table below. Female Male…

A: ( a ) P( both prefer Pepsi) = ? ( b ) P( Female or Coke ) = ?

Q: A political scientist is analyzing the possible voting outcomes of a proposal. According to polls,…

A: According to the given information, we have The probability that a voter will vote yes is 50% Sample…

Q: Suppose that there are four companies competing for five different government contracts. If the…

A: Introduction:The probability of an event in an experiment is the number of outcomes favorable to the…

Q: In a class of students, the following data table summarizes how many students have a cat or a dog.…

A:

Q: In a class of students, the following data table summarizes how many students have a brother or a…

A: From the table, we see that (4+3)=7 students have a brother. Among them, 4 students also have a…

Q: A small bag of skittles has 8 red, 9 blue, and 3 green candies. A box of chocolates has 4 cherry, 10…

A:

Q: A teacher of a class of 25 students is trying to decide whether her class will play soccer, or…

A:

Q: In a certain year, 23.2% of all light vehicles were light trucks, 7.0% were SUVs, and 69.8% were…

A: Let A be the event that the deadly proved accident occurred to the driver Given that P(A | Light…

Q: In a survey of 96 baseball fans in NYC, 46 were fans of the Mets, 63 were fans of the Yankees and 30…

A: Probability quantifies the chances of happening an event. The probability values always lie in the…

Q: Suppose that five hundred residents were randomly selected and asked whether they have covid vaccine…

A: There are two categorical variables which are gender and Covid Vaccine booster shot. We have to find…

Q: The residents of a small town and the surrounding area are divided over the proposed construction of…

A: a. The contingency table is given as,   Support Racetrack Oppose Racetrack Row Total…

Q: Fifty percent of all technical assistants would like to have a PC. Eighty percent of all technical…

A: Given Information: 50% of all technical assistants would like to have a PC. That is PPC=0.50 80% of…

Q: At Joe Cool University, 38% of all students have a pet dog, 51% have a pet cat, and 24% have both…

A: Let D=all students have a pet dogC=all students have a pet catP(D)=0.38P(C)=0.51P(D∩C)=0.24

Q: 2. Use the table to find each probability for a randomly chosen student. a) P(male) GENDER AND…

A: Solution; We know  that the probability  is defined as the number of favorable events to the total…

Q: The table summarizes the number of public schools in two California counties in 2017. County Los…

A: Given data is School Country   Los Angeles San Diego Total Elementary 1395 498 1893 Middle…

Q: A random sample of 2055 adults was taken, and they were asked if they prefer watching sports,…

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Q: A group of 140 students at an elementary school were asked if they prefer the color orange to the…

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Q: In a study, it was found that the Blood groups of employees was found that as A: 18, B: 24: AB: 20…

A:

Q: A small tool‑and‑die shop manufactures kneuter valves. A shipment of 1515 valves to a Swedish…

A:

Q: A computer technician notes that 40% of computers fail because of the hard drive. If he repairs many…

A: random variable X number of trials at which first success occurs. X~geometric(p)  where…

Q: The living districts of a class of 28 students are recorded in the following table   A B C Number…

A: Given: The table representing the division of boys and girls is given below   A B C Number of…

Q: 4. A set of traffic lights shows green for 45 seconds, amber for 5 seconds and red for 30 seconds.…

A: From the given information, Total time taken by traffic light is 80 seconds. For green it takes 45…

Q: In a certain college, 33% of the physics majors belong to ethnic minorities. If 10 students are…

A: The following information has been provided: The probability of success is p=0.33. The total number…

Q: 4) The table gives the number of degrees earned in a certain university in the 2007-2008 academic…

A: Determine the total number of persons who are awarded with degree in year 2007-2008.…

Q: In a class of students, the following data table summarizes how many students have a cat or a dog.…

A:

Q: In a recent survey of a random sample of 437 California residents, 129 said they visited a state…

A: Given : Sample size = 437 Number of people who said they visited a state park in last 6 months = 129

Q: top executives revealed that 35% regularly read Time magazine, 20% read Newsweek and 40% read US…

A: Consider: T=event that executive reads Time magazineN=event that executive reads News weekU=event…

Q: In a class of students, the following data table summarizes how many students have a cat or a dog.…

A: Given   Has a cat Does not have a cat Has a dog 5 3 Does not have a dog 15 4

Q: In a certain town, 62% of the residents enjoy riding roller coasters. Alfred takes a sample of 75…

A: Given Data: Using binomial to normal approximation Mean=n*p=0.62*75=46.5 Standard deviation=4.2036…

Q: A study of the incoming freshman class at a university found that 60% of the students had taken AP…

A: Here, we are given that: P(C) = 0.6, P(E) = 0.55 and P(C and E) = 0.2

Q: A manufacturer of cotter pins knows that 5 percent of his product is defective. If he sellseotter…

A: A binomial distribution is used when there are n number of independent trials with equal probability…

Q: A recent poll of residents in a certain community revealed the following information about voting…

A: From the table we see that: n(D)=n(Democrats)=110 n(M)=n(Male)=120 n(M and D)=50 So, n(M or…

Q: In a classroom of 20 students, 70% of them have brown eyes. If a teacher picks two students at…

A: solution.

Q: The table shows the political party affiliation of each of 67 members of the US Senate in June 2012,…

A: We are given the below tabular information: Up for reelection: Democratic Party Republican Party…

Q: A jar of marbles contains 3 red, 4 yellow, and 3 green marbles. Two marbles were drawn out of the…

A:

Q: A car dealership has 12 black cars and 4 white cars on display. If three cars were bought within…

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Q: Viewers ABC NBC CBS Other TotalMen 30 20 40 55 145Women 50 10 20 45 125Total 80 30 60 100 270If one…

A: There are total 125 women.  So we can pick a women in 125 ways.  When a women is given then we can…

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.