According to government data, 30% of married Americans married after 30. A study of married people chooses a random sample of 400 married Americans and asks persons in the sample the age at marriage. What is the expected number of married Americans in this sample that married after30?

Q: A study of people who are left handed was done and included 50 people in the 18 - 22 age bracket (20…

A: We have given data, Age group   Left handed   Number of peoples 18-22 20 50 23-30 22 70…

Q: What is the probability that six or more adults from this sample were between 25 and 34 years​ old?

A: Given that  n = 9 , p = 25% = 0.25 , q = 1 - p = 1 - 0.25 = 0.75 X ~ Binomial (n = 9 , p = 0.25) X =…

Q: 1. The chi-square test statistic is equal to |(Round to 2 decimal places) 2. The degrees of freedom…

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

Q: A literature professor decides to give a 10-question true - false quiz to determine who has read an…

A: The given scenario satisfies the characteristics of binomial distribution.Formula for binomial…

Q: According to the National Center for Education Statistics, 17% of all people in the United States,…

A:

Q: What is the probability that fewer than three adults from this sample were between 25 and 34 years​…

A: Given that

Q: aple of fifty college students, what is the probability that at least forty of them participate in a…

A:

Q: Based on historical data, your manager believes that 44% of the company's orders come from…

A: Obtain the probability that the sample proportion is between 0.22 and 0.33.   The probability that…

Q: An economics professional body estimates that 75% of the students taking undergraduate economics…

A:

Q: A recent survey of 1050 U.S. adults selected at random showed that 625 consider the occupation of…

A: Out of 1050 randomly selected US adults, 625 consider the occupation of firefighter to to have very…

Q: A computer manufacturer conducted a survey. It showed that a younger customer will not necessarily…

A: As correlation measures the degree of linear relationship between two variables.

Q: According to estimates, 0.3 percent of residents in a given city own dogs. Calculate the likelihood…

A: The question is about discrete prob. distribution Given : Prob. that residents in a city own a dog (…

Q: The Statistical Abstract of the United States reported that 18.2% of students whose post secondary…

A: Let X be the number of students whose post secondary degrees were health professions and related…

Q: It is known that 20% of people ride public transport without paying for it. We talk to 68 people who…

A: From the provided information, 20% of people ride public transport without paying for it that is…

Q: Based on historical data, your manager believes that 33% of the company's orders come from…

A:

Q: 5. A study indicates that 4% of American teenagers have tattoos. You randomly sample 30 teenagers.…

A: The binomial distribution probability is:P(X=x)=nCx​px(q)n−xwhere ::: x represents the total number…

Q: A market research organization surveyed 102 people and found that 73 of them would like more…

A:

Q: How many individuals are described in this table? How many females were among the respondents? The…

A: Here as per GUIDELINES I HAVE CALCULATED 3 SUBPARTS PLZ REPOST WITH NOTE I NEED THIS THIS ,.... here…

Q: According to US Census Bureau data 8% of African American adults earn more than $100,000 per year.…

A:

Q: outh Smoking Twò ðut 8I cquired the habit by age 14. If 400 smokers a andomly selected, find the…

A: Given X~ Binomial n=400 p=0.4

Q: According to a 2017 report, 53% of college graduates in a state had student loans. Suppose a random…

A: Given that N=140

Q: As reported by Television Bureau of Advertising, Inc. in Trends in Television, 84% of U.S.…

A: It is given that n =500 and p =0.84.

Q: what is the probability more than half of the sampled students are working full time?

A: Assume sixty percent of all NKU students work full time. If a random sample of 70 NKUstudents is…

Q: 9. Sixty percent of all road accidents are due to distracted driving. In a random sample of 400…

A:

Q: Traditionally, about 70% of students in a particular statistics course at ECC are successful.…

A: given data P(successful in statistics course) = p = 0.70sample size (n) = 20X = no. of students…

Q: A university's housing and residence office wants to know how much students pay per month for rent…

A: a. Population: Population is defined as the set of objects or subjects which are interest for some…

Q: Among 400 randomly selected drivers in the 20 - 24 age bracket, 6 were in a car crash in the last…

A: It is given that the number of randomly selected drivers are 400 and 6 were in a car crash in the…

Q: When making random guesses on an 8 question quiz the probability of guessing correctly on any one…

A:

Q: university study involves a simple random sample of 26 students taken from a population of​ 12,550.…

A: Given that Simple random sample size (n) = 26 Population size  = 12,550 Undergraduate students make…

Q: In a certain county in 2013, it was thought that 50% of men 50 years old or older had never been…

A: a) From the given information, the number of men had never been screened is 40 and the sample size…

Q: According to the CDC national center for health statistics, about 42.4% of adult Americans fit the…

A: given data, p=0.424n=200np=0.424*200=84.8nq=(1-0.424)*200=115.2 here np and nq≥5so we can assume…

Q: If 25% of boys born weigh over 20 lbs and a sample of 150 was taken what are the odds that 35 or…

A:

Q: Approximately 10% of all people are left-handed.  If you select a group of 27 people, what is the…

A: Given: Sample size (n) = 27 p (left-handed) = 10% = 0.10 Let "X" be the people who are left handed.

Q: If 15% of adults in a certain country work from home, what is the probability that no more than 60…

A: From the provided information, 15% of adults in a certain country work from home that is p = 0.15…

Q: In a family of five children, what is the chance that there are

A: Given information: The family of five children. P(boy)=P(girl)=1/2.

Q: Based on historical data, your manager believes that 34% of the company's orders come from…

A:

Q: It is known that 19% of people ride public transport without paying for it. We talk to 82 people who…

A:

Q: Based on historical data, your manager believes that 33% of the company's orders come from…

A: Given that, p=33%=0.33 n=106

Q: When a sample contains 100 or more cases, what is the correct probability distribution to use?

A: Given: When a sample contains 100 or more cases, what is the correct probability distribution to…

Q: A survey of U.S. adults ages 18-29 found that 92% use the internet. You randomly select 100 adults…

A: Given that:Success probability, p = 0.92Sample size, n = 100

Q: a Pew research center surveyed ask adults in the United States which technology would be very hard…

A: Necessary conditions for binomial experiment: For each trial, there are only two possible…

Q: It is known that 70% of adult workers have a high school diploma.  If a random sample of 25 adult…

A:

Bar Graphs

A bar graph is a chart or graphical representation of data. A bar chart, also known as a bar graph, is a graph or chart that displays categorical data using rectangular bars with heights or lengths equal to the values they represent. Typically, bar graphs show categorical and numerical variables grouped in class intervals. A bar graph is useful for comparing and analyzing a set of data.