In a survey of a random sample of 1,500 residents aged 25 years or older from a particular county, 399 residents had a bachelor’s degree or higher. If the entire county had 635,000 residents aged 25 years or older, approximately how many county residents count be expected to have a bachelor’s degree or higher?

Q: According to a Harvard Health Publishing article, the normal body temperature may be  lower than…

A:

Q: In the 2012 presidential pre-election surveys, Pew Research sampled 1,112 likely voters during…

A: Sample size:   Large sample sizes gives accurate results. Large sample sizes gives greater…

Q: A random sample of n1 = 10 regions in New England gave the following violent crime rates (per…

A: The sample statistics for the two samples is calculated using Excel software: Enter the data into…

Q: A random sample of n1 = 10 regions in New England gave the following violent crime rates (per…

A: Given x1:new england crime rate x2 rocky mountain crime rate 3.3 3.9 3.9 4.1 4.2 4.5 4.1…

Q: A random sample of n1 = 10 regions in New England gave the following violent crime rates (per…

A:

Q: Suppose Gallup wishes to complete a follow-up survey to find out more about the specific type of…

A: “Since you have posted a question with multiple sub-parts, we will solve first three subparts for…

Q: If you have a study in which 50 participants are randomly assigned to one of the three groups, the…

A: According to the provided information, the total number of participants in each group is 50, N.…

Q: A random sample of n1 = 10 regions in New England gave the following violent crime rates (per…

A:

Q: The following table shows the data of a random sample of fish collected from and later released into…

A:

Q: A random sample of n1 = 10 regions in New England gave the following violent crime rates (per…

A: It is given that the violent crime rates in New England and Rocky Mountain. The claim is that the…

Q: A random sample of n1 = 10 regions in New England gave the following violent crime rates (per…

A: Let μ1 denote mean violent crime rate in New England and μ2 denote the mean violent crime rate in…

Q: According to the September 20, 1994, issue of Family Circle, 39% of Americans own guns for hunting,…

A: Calculate expected frequencies by multiplying proportion by 2000 as given below, Obs. Freq.(Oi)…

Q: n. How many different random samples of seven accounts are possible?

A: Here population size N = 40 Sample size n = 7

Q: At a certain college, it is estimated that at most 35% of the students ride bicycles to class. At…

A: Given that the proportion of students that ride bicycles to class = 35% or p =0.35 Let x= 28…

Q: In a CBS News survey done in 2006, 88% of n = 348 randomly sampled married men said that they would…

A: Given that  Sample sizes n1=348 , n2=584 Sample proportion p1^=0.88 , p2^=0.84

Q: According to an almanac, 80% of adult smokers started smoking before turning 18 years old. (a) If…

A: Given that, n=400,p=0.80 (a) The expected number of adult smokers to have started smoking before…

Q: In designing an experiment involving a treatment applied to 5 test subjects, researchers plan to use…

A: The total number of subjects available is 45. The number of selected subjects is 5.

Q: A manufacturer of automobile tires reported that among a shipment of 600 sent to a local…

A: Given that 20 are blemished out of 600. So the probability of blemished is= 20/600= 1/30

Q: Suppose that a 2012 National Health Interview Survey gives the nu which gives the number of adults…

A: Solution

Q: A survey of randomly selected university students found that 91 of the 106 first-year students and…

A: (a) Using Excel formula “=NORM.S.INV(1-(0.02/2))” (or from standard normal distribution table), the…

Q: Your town does a study and finds that 3 in 5 dogs have licenses. If there are 250 dogs in town, how…

A: In the given study it has been found that 3 in 5 dogs have licenses. The probability that the dogs…

Q: a sample is a smaller subset of the entire population, ideally one that is fairly representative of…

A: This is pharse "a sample is a smaller subset of the entire population, ideally one that is fairly…

Q: 5. According to a recent study, 7 out of every 500 Americans aged 13 to 17 years are vegetarian. In…

A: Given: 7 out of 500 Americans aged 13 to 17 years are vegetarian.

Q: 1. In a survey of university students 64 had taken mathematics course

A: Given, in a survey of university students 64 had taken mathematics courses, 94 had taken…

Q: Wore a bicycle helmet (among students who had ridden a bieyele during the previous 12 months)?…

A:

Q: A random sample of 12 pledges to a public radio fundraiser revealed the following dollar pledges: 75…

A: Range of a data set is the difference between the maximum and the minimum value. It is obtained by…

Q: x1:   New England Crime Rate 3.3 3.7 4.0 3.9 3.3 4.1 1.8 4.8 2.9 3.1 Another random sample of n2 =…

A: Given that, x1:   New England Crime Rate 3.3 3.7 4.0 3.9 3.3 4.1 1.8 4.8 2.9…

Q: According to a 2019 survey by Sleepopolis, 34% of American adults sleep with some form of "comfort…

A: Let the random variable X be the number of American adults sleep with a comfort object from sample…

Q: If 40% of all the students are taking four classes, and 60% of all the students are taking three…

A:

Q: random sample of n1 = 10 regions in New England gave the following violent crime rates (per million…

A: We have used the excel data analysis tool to run the regression analysis.

Q: Given this information, if having a laptop is independent of gender, the expected number of males…

A: The expected count can be obtained as E = (row total × column total)/Total

Q: A researcher surveyed 80 randomly selected Certified Public Accountants in each of the cities in…

A: The 2*4 contingency table is given. There are two categorical variables are Free Work and Cities. We…

Q: A recent study suggested that 70% of all eligible voters will vote in the next presidential…

A: Solution: Let X be the number of eligible voters will vote in the next presidential election and n…

Q: A random sample of n1 = 10 regions in New England gave the following violent crime rates (per…

A: Introduction: Assume that the crime rate in Region NE and Region RM are independent. Further, the…

Q: A random sample of n1 = 10 regions in New England gave the following violent crime rates (per…

A: given, n1=10, n2=12 where n1 is the violent crime rate in New England Crime rate x1 =…

Q: If I use the portion of the given random number table to select the first five students to be…

A: Given that there are 250 students and they are numbered from 001 to 250 in alphabetical order. To…

Q: In a sample of 310 people, 186 completed only high school, 24 completed only some college, 93…

A: Given data A sample of 310 people is given. 186 completed only high school. 24 completed only some…

Q: 80​%of adult smokers started smoking before turning 18 years old. ​(a) If 200 adult smokers are…

A: Given that   Percent Adult smokers started smoking before 18 years old  = 80% = 0.80   We know that…

Q: Suppose that insurance companies did a survey. They randomly surveyed 450 drivers and found that 300…

A: Part a:          x = 300         n = 450         p' = 300/450 = 0.6667   Part b:  X is the number of…

Q: The following table is based on a random sample of people age 18 and older who said they were…

A: There are two categorical variables which are gender and bringing a laptop. Bringing a laptop has 2…

Q: In a random sample of 450 people aged 20-24, 24% were smokers. In a random sample of 400 people aged…

A:

Q: An employee at the metropolitan museum of art surveyed a random sample of 150 visitors to the museum…

A:

Q: Approximately 8% of males experience red-green color blindness. Suppose a random sample of 200 men…

A: Given that, The population proportion of 8% males who experience re-green color blindness.

Q: A random sample of n1 = 10 regions in New England gave the following violent crime rates (per…

A:

Q: Based on this sample, how many of the 62,000 books in the collection should Mr. James expect to have…

A: It is given that Number of books with no damage = 1026 Sample size n = 1026+28+26 = 1080 Let p be…

Q: A survey conducted by the Bureau of Labor Statistics found that 67% of high school graduating class…

A: Let A denotes the student in the high school graduating class went on to college and B denotes…

Q: In a survey, it was found that 80% of adults operate the flusher of toilets in public restrooms with…

A: Given information- Sample size, n = 300 The proportion (p) is = 0.80 Now, from Binomial to normal…

Q: A random sample of n1 = 10 regions in New England gave the following violent crime rates (per…

A:

Q: According to an​ almanac, 60​% of adult smokers started smoking before turning 18 years old. ​(a) If…

A: Given Information: proportion p=60%=0.60 (a) If 300 adult smokers are randomly selected, how many…

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.