13) A 1970 study showed that of American married-couple families, 43% had no children, 18% had one child, 18% had two children and 21% had three or more children. A recent survey of 500 American married-couple families revealed that 267 had no children, 87 had one child, 96 had two children and 50 had three or more children. At the 0.01 level of significance, test the claim that the 1970 proportions are no longer valid. MacBook Air FIL F10

Q: In a 2009 survey by I-Pension LLC, adults with annual household incomes of $50,000 to $125,000 were…

A:

Q: hypothesis H0:p=0.65 where p is the proportion of all adults in the city who meet or exceed the…

A: Given that  n=400 , X=245 , p0=65%=0.65 p=X/n

Q: 2. The principal of the school claims that the main age of tne teachers is 48 years. The mean age of…

A:

Q: Ten years ago, 35% of a brokerage firm’s clients only had a single account, 25% had 2 accounts, and…

A: Solution: Given information:  n= 300 Sample size of clients k= 3 Categories  P1= 0.35 Probability of…

Q: The state of Ohio conducted COVID19 tests on 68,811 people, and 8,533 tested positive. What is…

A: We can find the sample proportion as below

Q: 4. A company is interested in evaluating its current inspection procedure for shipments of 50…

A:

Q: In a case-control study researchers investigated whether there was an association between living…

A: Statistical Inference: Statistical inference is the process of drawing inferences about a population…

Q: 11) For a survey, individuals were asked if people with "extreme views" should be allowed to give…

A: (a)   State the hypotheses.   Let pM denotes the population proportion of all males Let pF denotes…

Q: I need help with #2  part E , please.

A:

Q: es/CBS News poll sampled 523 adults who were planning a vacation during the next six months and…

A: We have 2015 as Population 1 and 2005 as Population 2. Then p1=Population proportion of Population…

Q: A random sample of 1400 Internet users was selected from the records of a large Internet provider…

A: Given data A random sample of 1400 internet users was selected  and asked whether they would use…

Q: There is a looming crisis in universities and colleges across North America. In most places…

A: Given information: Use the filter function from the excel to determine the number of professors who…

Q: According to the National Institute on Alcohol Abuse and Alcoholism (NIAAA), and the National…

A: Given Information: Hypothesized value of population proportion is p0=41%=0.41 Sample size (n) = 462…

Q: General Motors wants to know if a newly designed car has a different appeal to people under 30…

A:

Q: A union’s executive conducted a survey of its members to determine what the members felt the…

A: Let A be the random variable denoting that job security was an important issue.Let B be the random…

Q: The Gallup organization surveyed 1100 adult Americans on May 6-9, 2002, and conducted an independent…

A: The conditions for two proportion is to be satisfied is: The two samples are random samples and…

Q: Based on a sample of 80 men, 35% owned cats Based on a sample of 40 women, 50% owned cats The test…

A:

Q: 3. A proposal for a new 1-cent tax increase to support cancer research is to appear on the ballot in…

A: the problem can be solved by finding the margin of error and then upper and lower limits. please…

Q: 2. A hot topic of debate is whether the legal driving age should be raised to eighteen. From a…

A:

Q: 15.1 #4

A: Given survey is, Whether or not people are better off economically this year than last year. After…

Q: According the the U.S. Census bureau, the percentage of Santa Ana residents with a bachelor's degree…

A: From the provided information,

Q: To determine if the proportions the European football agency reported are accurate, the researcher…

A: Test is that whether the proportions the European football agency reported are accurate.

Q: A researcher is interested in determining if the proportion of children that collect specific types…

A: Given Solution:

Q: 4. A private opinion poll is conducted for a politician to determine what proportion of the…

A:

Q: The death rate per 100,000 for lung cancer is 7 among non-smokers and 71 among smokers. The death…

A: Given Information: The death rate per 100,000 for lung cancer is 7 among non-smokers and 71 among…

Q: A March 2021 Gallup poll asked a nationally representative sample of randomly selected U.S. adults…

A:

Q: Suppose that 20% of the residents in a certain state support an increase in the property tax. An…

A: Given info: Suppose 20% of the residents in a certain state support an increase in the property tax.…

Q: According to a report, 9.5% of all full-time S.A. undergraduate students study abroad. Assume that…

A: Introduction:The full-time female undergraduate students are of two types- those who study abroad,…

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: According to the National Institute on Alcohol Abuse and Alcoholism (NIAAA) and the National…

A: we have given that  sample size N=344 ,favorable cases X=132 , population proportion P=41%=0.41…

Q: 3. In a study of the relatic a sample of 180 college of comparable age and Estimate the difference…

A: Estimation is an important concept in statistics.

Q: In the past, 35% of the students at ABC University were in the Business College, 35% of the students…

A: It is given that the 35% students are in Business College, 35% students are in Liberal Arts College…

Q: rom the U.S. Census Bureau’s American Community Survey in 2019 it was found that 33.13% of United…

A: since there are multiple parts, first three subparts are answered. kindly repost for more help .

Q: Let the sample mean of a set of 20 data points be 30. If it is discovered that a data point having…

A: Given that the sample size is 20 and the sample mean is 30. That is, n=20 and x¯=30 The sample mean…

Q: A union’s executive conducted a survey of its members to determine what the members felt the…

A: Given that: Proportion of members who felt job security was an important issue:  PJob security=0.74…

Q: According the the U.S. Census bureau, the percentage of Santa Ana residents with a bachelor's degree…

A:

Q: In 2008, a university in the midwestern United States surveyed its full-time first-year students…

A: Here we have to find out the  statistic used to estimate the parameter the parameter of interest…

Q: Pregunta 1 In 2018, a university in the western United States surveyed its full-time first-year…

A: Given See the handwritten solution

Q: c please     survey of 1000 adults from a certain region​ asked, "If purchasing a used car made…

A: Identify the correct options for the blanks of the confidence interval obtained.   The correct…

Q: 5. The Knight Igates high school students agreed with the statement that 2oople should be allowed to…

A:

Q: 3. It is claimed that the percentage of viewers tuned to Channel 2's new sitcom is 30%. Out of the…

A: 3. The provided information isn=250p^=0.29α=0.05 a. The null and alternative hypothesis…

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: 9. If a population is concentrated on the elderly and has very little number of children, then the…

A: the given statement is, If a population is concentrated on the elderly and has very little number of…

Q: Do American’s views of the war in Iraq vary by religion?A study conducted in 2007 by The Baylor…

A: Hey there! Thank you for posting the question. Since your question has more than 3 parts, we are…

Q: According to the National Institute on Alcohol Abuse and Alcoholism (NIAAA) and the National…

A:

Q: 2. A Municipal Health Officer (MHO) who actively supports the CDD Programme of the government…

A: The confidence interval is the range or interval that has population parameter. It has combined…

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…

Q: According to the NIMH website the average number of adult Americans diagnosed with a “serious mental…

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

Q: 4. In a study to estimate the proportion of residents in a certain city and its suburbs who favor…

A:

Average

In mathematics, everyone must have heard the term average in one place or other. Almost all types of calculation require taking out an average. In everyday life, the term is used for denoting a certain amount that can be said to be a typical quantity for multiple people or objects. In other words, if a group of people possesses a certain object, then the average gives us an idea regarding the quantity of the object possessed by each person. However, this is solely based on mathematical calculation. It is important to note that most people will not strictly have the average value in a group.