Rose randomly surveyed 50 students and found that 15 had a part-time job. If there are 750 students in Rose's school, predict the total number of students with a part-time job

Q: One pair of students ended up with a significant difference from expected, as their coin tosses…

A: When the sample size is quite large according to central limit theorem the sample will follow a…

Q: The placement test for a college has scores that are normally distributedwith μ= 400 and σ= 75. If…

A:

Q: Suppose a quarterback's completion percentage for the season is 67.2%. Based on relative frequency,…

A: We have to find Based on relative frequency, is it more likely that he will complete his next two…

Q: In a recent election, 63% of all registered voters participated in voting. In a survey of 275…

A: The percent of participation of voters is equal to: In the given case; when the observation sample…

Q: Of 52 students, it was found that 15 were commuters. If one-quarter of the female students and…

A: Let, x be no of male students y be no of female students Given, x+y=52  -->1 15 were commuters.…

Q: A hot topic of debate is whether the legal driving age should be raised to eighteen. From a random…

A: It is tested whether majority of the Americans believe the legal driving age should be raised to 18.…

Q: 2. A study found that 60 percent of college students say they are housing insecure, while 18 percent…

A: Given

Q: Use the figure to the​ right, which shows the percentages of adults from several countries who favor…

A:

Q: A recent random sample of 7 college graduates who found a job reported their GPA and entry level…

A:

Q: an you conclude that the percentage of people aged 18-29 who have a tattoo is less than 25%

A: Given : n=830 , X=166 , p0=0.25 , α=0.01 The estimate of the sample proportion is ,…

Q: Out of a sample of 38 people, 23 people enjoyed biking and 15 enjoyed running. Test the claim that…

A: Given that,  x = 23, n = 38 The sample proportion of people prefer biking is, Null and alternative…

Q: A recent survey found that 68.6% ofthe population own their homes. In a random sample of180 heads of…

A:

Q: 6 of the last 10 sundaes sold had nuts. Considering this data, how many of the next 5 sundaes sold…

A: The probability that sundaes sold had nuts is, Psold sundaes have nuts=610=0.6 The probability that…

Q: Assume that half the population is vegetarian so that the chance of an individual being a vegetarian…

A:

Q: Table 2.10 shows fatality results for drivers and Florida in 2008, according to whether the person…

A: Relative risk and odd ratio

Q: A fast food chain surveyed a random sample of students to determine what pizza they prefer. Cheese…

A:

Q: A recent random sample of 7 college graduates who found a job reported their GPA and entry level…

A:

Q: In a  lab ,the coronavirus  vaccine causes negative effects  in 3 out of every 100 patients . 5…

A: Given,n=5p=0.03X~Binomial(n=5,p=0.03)P(X=x)=cxn px(1-p)n-x ;X=0,1,.....n

Q: During the summer of 2020, about 68% of San Diego young adults played a game called Animal Crossing.…

A:

Q: A poll of 80 students selected at random at Midtown University found that 20 were in favor of a fee…

A: Given  Total student in sample = 80 students No. of student in favour of feet hike = 20 students

Q: According to a recent report, 21% of all adults routinely skip breakfast. A researcher believes this…

A:

Q: A Harris Interactive poll reported that 32.4% of 275 randomly selected Americans living in the west…

A: Denote p1, p2 as the true population proportions of Americans living in the west and south,…

Q: Male penguins that weigh more than 4710 grams are considered "desirable" because the extra fat means…

A: We need to find expected value of desirable penguins Let us find out probability of a desirable…

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

A:

Q: A random study reported that 74% of very-low-birth-weight babies graduate from high school by age…

A: Given that, The probability of very high low birth weight babies graduate from high school by age 20…

Q: An opaque jar contains 300 marbles, all either green or purple. Calista pulls out 10 marbles without…

A: # Given: no of marble in jar N=300  Sample of size n=10 drawn  No of purple marble in sample =2…

Q: A random sample of voters found that 180 out of 320 people were in favor of a gas tax. Election…

A: Given Random sample is 180 out of 320 voters are in support of tax. Total 36000 people voted in…

Q: A survey is conducted on the use of Facebook of adults in the United States, where 12,000 adults are…

A: Population of a survey means the entire group on which we are taking survey. Sample is a specific…

Q: of 90% with a sample

A: Given : Sample size = n = 19 Significance level, α =1- 0.9 = 0.1

Q: In a recent election, 54% of all registered voters participated in voting. In a survey of 350…

A: Writing the sample population as a percentage i.e. 217 of 350:

Q: The grades of a sample of 9 students on a prelim exam (x) and on the midterm exam (y) are shown in…

A: Let X denote the prelim exam Let Y denote the midterm exam Calculation:

Q: At Sundae King, 6 of the last 10 sundaes sold had nuts. Considering this data, how many of the next…

A: We have to find correct answer

Q: Globally, 35% of all ridged brittleshell tortoises have spots on their shells. A herpetologist in…

A: Solution

Q: According to a recent Pew Research Center report, many American adults have made money by selling…

A: Given Data: x=914 n=4579   p^=xn=9144579=0.1996

Q: For a team with 1318 turnovers in a season, find the expected number of wins in a season.

A: It is given that Regression equation of y on x is y = 102 - 0.05x

Q: Blank are more representative of a population, but blank are easier to obtain

A: The sample is a set of units that is obtained from a population, which represents the population.…

Q: Only about 10% of all people can wiggle their ears. Is this percent different for millionaires? Of…

A: Here use single proportion z test Only about 10% of all people can wiggle their ears. Is this…

Q: Suppose, you are running an experiment for 1024 times where the probability of success in a single…

A: Given: The number of times an experiment runs is n=1024. The probability of success in a single…

Q: A dietician read in a survey that 70.5% of adults in the U.S. do not eat breakfast at least 3 days a…

A: It is need to be tested whether the population proportion of adults in U.S who do not eat breakfast…

Q: Data collected by the Oil Price Information Service from more than 90,000 gasoline and convenience…

A: The mean is the average value of all the observation. It is calculated using the formula: The…

Q: Find the probability (in percent) of randomly selecting someone who has an allergy or test negative.

A: We have a given table and using this table we have to find the probability that who has an allergy…

Q: USA Today posted this question on the electronic version of its newspaper: “Should guys pay for…

A: An experiment deliberately imposes some treatment on individuals in order to observe their…

Q: Suppose a study revealed 63% of all subjects possessed trait A, 31% possessed trait B, and 18%…

A: Solution

Q: According to a report published by the center for Disease Control (CDC) in 2011, approximately one…

A: Here we explain the result.

Q: A Pew poll taken in 2010 surveyed 830 people aged 18-29 and found that 166 of them had one or more…

A:

Q: In a study conducted by the U.S. Department of Health and Human Services, a sample of 546 boys aged…

A: A sample of 546 boys aged 6–11 was weighed and it was determined that 87 of them were overweight. A…

Q: A coin is flipped 70 times and lands on tails 28 times. What is the relative frequency of the coin…

A:

Q: College bound: A national college researcher reported that 64% of students who graduated from high…

A: solution:- given n=27        p=64%=0.64 here it follows the binomial distribution: it has n fixed…

Q: The length of a fully grown hibiscus plant is normally distributed and has a mean 35cm. It is found…

A: Given information: μ=35, σ=? x = 45 Px>45=0.05

Q: In a survey of a sample of 1050 teenagers, 17% said they like to watch soccer.

A: Given that  In a survey of a sample of 1050 teenagers , 17% said that they like to watch soccer.…

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.