In a previous poll, 38% of adults with children under the age of 18 reported that their family ate dinner together seven nights. suppose that, in a more recent poll, 399 of 1099 adults with children under the age of 18 reported that their family ate dinner together seven nights a week. is there sufficient evidence that the proportion of families with children under the age of 18 who eat diner together seven nights a week has decreased? use the a=0.05 significance level

Q: A study was conducted to determine the proportion of people who dream in black and white instead of…

A: Confidence interval are used to determine the range where the true parameter lies. It calculated…

Q: restaurant chain would like to measure the proportion of customers who are generally satisfied with…

A: Given: The sample number of customers that were surveyed is n=147. The number of customers who…

Q: A study was conducted to determine the proportion of people who dream in black and white instead of…

A: Claim: The proportion of people over 55 who dream in black and white is greater than the proportion…

Q: In the past, 75% of the tourists who visited Chattanooga went to see Rock City. The management of…

A: GivenNo. of tourist(n)=400No.of tourists visited Rock city(x)=320p^=xn=320400p^=0.80

Q: In 1955, Life Magazine reported that a 25-year-old mother of three worked (on average) an 80 hour…

A: Given that, Sample size of women n=67 Sample average x¯=83 Sample standard deviation s=10 It is been…

Q: Health issues due to being overweight affect all age groups. By community records, children aged…

A: Claim :  population proportion is less than the community proportion.

Q: A restaurant chain would like to measure the proportion of customers who are generally satisfied…

A: There is survey of customers who visited the restaurant about how much they satisfied and we have to…

Q: A study was conducted to determine the proportion of people who dream in black and white instead of…

A: The given hypothesis is H0:p1=p2 versus H1:p1>p2.

Q: According to the U.S. Census Bureau, 11% of children in the United States lived with at least one…

A:

Q: According to the FBI and the Justice Department, 70% of all arrests are of males aged 15 to 34…

A: The level of significance is 0.01 (=1%).

Q: According to the February 2008 Federal Trade Commission report on consumer fraud and identity theft,…

A: If the value of sample size is more than 30, then we say that it is a large sample test. Once we…

Q: • In a 2019 survey of 560 college students, 171 said they used illegal drugs during the previous…

A: n1=560, x1=171n2=720, x2=263α=0.05 Claim: p1<p2

Q: In a recent Gallup poll, 507 adults age 18 and older were surveyed and 269 said they believed they…

A:

Q: State the distribution to use for the test (Enter your answer in the form z or tar where af is the…

A: n =77mu = 80xbar = 83s = 10

Q: A study was conducted to determine the proportion of people who dream in black and white instead of…

A: Given n1=295 n2=292 X1=74 X2=14

Q: in october 1947 the gallup organization surveyed 1000 adult americans and asked are you a total…

A: We have given thatn1 = 1000 , x1 = 378n2 = 1000 , x2 = 333Significance level (α) = 0.05Now,p̂1 =…

Q: A study was conducted to determine the proportion of people who dream in black and white instead of…

A: Denote p1, p2 as the proportions of all people who dream in black and white instead of color under…

Q: Astudy was conduccled to determine the proportion of people who dream in black and white instead of…

A: Given , People over age 55 : Sample size = n1 = 317 Number of people who dream in black and white  =…

Q: In a study conducted to examine the quality of fish after 7 days in ice storage, tên raw fish of the…

A: The correlation coefficient is a statistical measure of the strength of the relationship between the…

Q: Based on the Nielsen ratings, the local CBS affiliate claims its 11 p.m. newscast reaches 52% of the…

A: Givensample size(n)=100p^=0.47

Q: er the age of 18 who eat dinner toget than the level of significance. Theref an the level of…

A: Given data number of success , x= 515.0 sample size, n = 1172 population…

Q: The National Association of Home Builders reported that 57 % of young people ages 18-24 wereliving…

A: According to the provided information, 57% (p) of young people ages 18-24 were living with their…

Q: A study was conducted to determine the proportion of people who dream in black and white instead of…

A:

Q: In a previous poll, 30% of adults with children under the age of 18 reported that their family ate…

A:

Q: A sample survey by Comcast asked a random sample of customers about use of the Internet and about…

A: The test is to check whether there is a relationship between Internet use and community type or not.…

Q: You are interested in investigating if there a difference in mean cholesterol between the four diet…

A: The objective is to identify the type of sample and outcome for the following scenario:You are…

Q: A study was conducted to determine the proportion of people who dream in black and white instead of…

A:

Q: A study was conducted to determine the proportion of people who dream in black and white instead of…

A: a. Denote p1, p2 as the true population proportions of people, who dream in black and white over the…

Q: In 1955, Life Magazine reported that a 25-year-old mother of three worked (on average) an 80 hour…

A: As per honor code we will only answer first three parts. The sample size is greater than 30 and the…

Q: A study was conducted to determine the proportion of people who dream in black and white instead of…

A: There are two independent samples which are age of 55 and age of 25. Both samples are drawn from the…

Q: In 1955, Life Magazine reported that a 25-year-old mother of three worked (on average) an 80 hour…

A: Given: x¯=83μ=80s=10n=77 Degrees of freedom: df=n-1=77-176 The critical-value is obtained by using…

Q: According to YCharts in 2018, the unemployment rate for 15- to 24-year-olds in British Columbia was…

A: Sample size = 400 Proportion of sample having unemployment of 15-24 years = 0.094  Proportion of…

Q: A study was conducted to determine the proportion of people who dream in black and white instead of…

A: From the provided information, n1=323x1=71n2=288x2=14

Q: Newborn babies are more likely to be boys than girls. A random sample found 13,173 boys were born…

A: We have to use CLT for finding the probability for proportions.

Q: A study was conducted to determine the proportion of people who dream in black and white instead of…

A: X1=64 X2=13 n1=295 n2=312

Q: 4. In a poll of 1018 adults, it was found that 22% smoked cigarettes in the past week. Use a 0.05…

A:

Q: According to Nielsen Media Research, of all the U. S. Households that owned at least one television…

A: From the provided information, The hypotheses can be constructed as: H0: p = 0.83 Ha: p < 0.83…

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.