random sample of 5055 adults in the United States includes 751 who do not use the Internet (based on three Pew Research Center polls). Use a 0.05 significance level to test the claim that the percentage of US adults who do not use the Internet is now less than 47%, which was the percentage in the year 2000. If there appears to be a difference, is it dramatic? 1. claim 2. Ho 3. Ha.

Q: According to a survey of 5041 Star Trek fans conducted in 2010, 2873 are females. Use this data to…

A: Null Hypothesis: H0: p<=0.5 Alternative Hypothesis: H1:p>0.5 Given that x=2873 and n=5041…

Q: A random sample of 860 births in New york state included 434 girls. Use a 0.05 significance level to…

A: The aim is to test the claim that 48.8% of newborn babies are girls. The test hypotheses are given…

Q: In a random sample of 580 people aged 20-24, 110 owned an iPad. In a random sample of 450 people…

A:

Q: Past studies have indicated that the percentage of smokers was estimated to be about 33%. Given the…

A: Answer: From the given data, Population proportion (P) = 33% = 0.33 Sample size (n) = 1875 x = 436…

Q: Consider a drug testing company that provides a test for marijuana usage. Among 253 tested​…

A: The appropriate Null and Alternative Hypotheses are given below:   From the given information, the…

Q: Approximately 20.5% of the U.S. population 5 years old and older speaks a language other than…

A: sample size is 400 & Population Proportion =0.205

Q: A credit score is used by credit agencies (such as mortgage companies and banks) to assess the…

A: n=31, μ=709.3, x¯=722.3, s=81.1

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

A: Hi! Thank you for the question, As per the honor code, we are allowed to answer three sub-parts at a…

Q: It is believed that 10% of the children enrolled in the elementary schools are left-handed. Suppose…

A:

Q: The work week for adults in the US that work full time is normally distributed with a mean of 47…

A: State the hypotheses. That is, there is no evidence to conclude that the employees at start-up…

Q: 2. Is there a difference in the proportion of individuals with food allergies between young children…

A: The sample proportions are The pooled proportion or weighted estimate of p is,

Q: A credit score is used by credit agencies (such as mortgage companies and banks) to assess the…

A: Given Mean=702.5 Standard deviation=84 3 n=39

Q: A random sample of 834 births included 433 boys. Use a 0.05 significance level to test the claim…

A:

Q: score A credit score is used by credit agencies (such as mortgage companies and banks) to assess the…

A: Given:Mean(x)=716.2Standard deviation(s)=81.1Sample size(n)=34α=0.05

Q: Suppose 221 subjects are treated with a drug that is used to treat pain and 52 of them developed…

A:

Q: The work week for adults in the US that work full time is normally distributed with a mean of 47…

A: Introduction: Denote μ as the true mean time worked by an employee at start-up companies, in a work…

Q: Suppose 250 subjects are treated with a drug that is used to treat pain and 50 of them developed…

A: given data clim : p > 0.20n = 250x = 50α = 0.05p^ = xn = 50250 = 0.20

Q: Do male and female college students have the same distribution of living arrangements? Use a level…

A:

Q: The work week for adults in the US that work full time is normally distributed with a mean of 47…

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: The work week for adults in the US that work full time is normally distributed with a mean of 47…

A: Solution: Since the test is about mean the symbol should be used is µ. State the hypotheses. Null…

Q: A survey of 1200 TV households showed that 53.5% of them had at least one stand-alone streaming…

A: Let p be the population proportion  p=majority=1/2=0.50=50%, n=1200, p^=sample…

Q: 3) The management of an amusement park wanted to determine the amount of waiting time for the park's…

A: Answer can be given by using the formulas for mean, median, mode and midrange.

Q: The work week for adults in the US that work full time is normally distributed with a mean of 47…

A: We have given that  data  Population mean mu= 47  Level of significance =alpha = 0.01 Sample size…

Q: A marketing manager for a cell phone company claims that more than 35% of children aged 10-11 have…

A: Assume that p is the true proportion of all children aged 10-11 that have cell phones.

Q: A research article stated that there was a mean difference in depressive symptoms between male and…

A: From the provided information, The claim is that there was a mean difference in depressive symptoms…

Q: A credit score is used by credit agencies (such as mortgage companies and banks) to assess the…

A: Given data : sample size, n = 44 sample mean, x̄ = 722.4 sample standard…

Q: Suppose 236 subjects are treated with a drug that is used to treat pain and 53 of them developed…

A:

Q: A survey was conducted to determine whether adult participation in physical fitness programs varies…

A: State the hypotheses. Null hypothesis: Alternative hypothesis: Correct option: Option 1.

Q: The work week for adults in the US that work full time is normally distributed with a mean of 47…

A: Answer Given,The level of significance = 1% = 0.01The sample size [n] = 12

Q: Labor Day was created by the U.S. labor movement over 100 years ago. It was subsequently adopted by…

A: Given : sample size = n = 1000 x = 650 p^ = xn   = 6501000   = 0.65

Q: A credit score is used by credit agencies (such as mortgage companies and banks) to assess the…

A: Given information Population mean µ = 707.6 Sample size (n) = 43 Mean x̅ = 718.3 Standard deviation…

Q: Suppose 214 subjects are treated with a drug that is used to treat pain and 54 of them developed…

A: Given that, x=54,n=214 The sample proportion is, Null and alternative hypothesis:

Q: There is not enough evidence to show that population proportion of adults that have never been…

A: Given data number of success , x= 250.0 sample size, n = 97 population…

Q: Consider a drug testing company that provides a test for marijuana usage. Among 317 tested​…

A:

Q: According to a publication, 12.6% of 18 to 25-year-olds were users of marijuana in 2000. A recent…

A: From the provided information, 12.6% of 18 to 25 years old were users of marijuana in 2000 that is p…

Q: The work week for adults in the US that work full time is normally distributed with a mean of 47…

A:

Q: A credit score is used by credit agencies (such as mortgage companies and banks) to assess the…

A: One sample t-test: One sample t-test is used to test the significance difference between population…

Q: The work week for adults in the US that work full time is normally distributed with a mean of 47…

A: Statistical hypothesis testing is an important method in inferential statistics. It is used to test…

Q: he work week for adults in the US that work full time is normally distributed with a mean of 47…

A: The formula for the t test statistic is, t=x¯-μsnμ is the population means is the sample standard…

Q: An online poll​ asked: "Do you believe the Loch Ness monster​ exists?" Among 22,038 ​responses,63 ​%…

A: Solution: From the given information, p-hat = 0.63 and n = 22,038.

Q: The work week for adults in the US that work full time is normally distributed with a mean of 47…

A: Given data: Population mean = 47 Sample size  = 12 Significance level  = 0.05

Q: A credit score is used by credit agencies (such as mortgage companies and banks) to assess the…

A: Given that ; u = 700.4 Sample mean = 716.2 n = 34  s = 81.1 Here we use one sample mean test to…

Q: The work week for adults in the US that work full time is normally distributed with a mean of 47…

A:

Q: Suppose 219 subjects are treated with a drug that is used to treat pain and 51 of them developed…

A: From the provided information, Population proportion (p) = 0.20 Sample size (n) = 219 Out of which…

Q: c. The p-value = d. The p-value is e. Based on this, we should Select an answer f. Thus, the final…

A: From Part (b), the z test statistic is 2.234.

Q: USA Today (Feb. 17, 2011) described a survey of 1,008 American adults. One question on the survey…

A: a) The sample proportion is p-cap = 205/1008           = 0.203 b) The population proportion p is…

Q: The work week for adults in the US that work full time is normally distributed with a mean of 47…

A: Step 1:Given:Sample size, n = 12Data454951554768465545495351Step 2:Goal:State the Null and…

Q: A recent report from the Pew Research Center indicates that even teens think they have a problem…

A: For teenage girlssample size(n1)=365x1=171For  teenage boyssample size(n2)=378x2=132significance…

Q: Consider a drug testing company that provides a test for marijuana usage. Among 253 tested subjects,…

A: