You have recently had a debate with a friend about who uses smartphones the most. Your friend believes that men use smartphones more than women. After conducting a research study, you find that out of 973 randomly sampled men, 379 use smartphones. Out of 1,304 randomly sampled women, 404 used smartphones. Based on a 95% confidence level, after hypothesis testing, what would you tell your friend? Would the null hypothesis reject H0 or fail to reject H0

Q: In July of 2013, Australians were asked if they thought unemployment would increase, and 47% thought…

A: We have to test at  whether the proportion of people who thought that the unemployment is increases…

Q: A political candidate has asked you to conduct a poll to determine what percentage of people support…

A:

Q: uring an election, Kevin and Britney took a poll of 1,200 voters, and asked what the most…

A:

Q: A political candidate has asked you to conduct a poll to determine what percentage of people support…

A: In this question, It has been given that Margin of error = 0.05 and level of significance = 0.005.…

Q: A political candidate has asked you to conduct a poll to determine what percentage of people support…

A:

Q: A magazine provided results from a poll of 500 adults who were asked to identify their favorite pie.…

A: It is given that: p^ (proportion of adults, who lie chocolate pie at the sample level)=11% (i..e,…

Q: A survey of 225 randomly chosen commuters are asked if they support an expanded public…

A:

Q: Your statistics instructor claims that 60 percent of the students who take her Elementary Statistics…

A: Given that,The total number of surveyed students is 64.Therefore, the sample size is The number of…

Q: You have recently had a debate with a friend about who uses smartphones the most. Your friend…

A:

Q: You're considering going to graduate school, and you would like to know how many people would…

A: From the provided information Sample size (n) = 29, People who recommend x = 9 The sample proportion…

Q: A survey company polls 1,233 voters about whether they plan to vote for the Liberal or the…

A: Sample size 52% of voters prefer the Liberal candidate i.e., Significance level

Q: A survey of 26 individuals found that they spent an average of $39.21 on exercise attire for the…

A: Confidence interval is an inference process which is used to estimate the population parameter. The…

Q: You sample 33 people to see if they own a dog, and find that 42% of them (rounded) do own a dog.…

A: The random variable X follows binomial distribution. X ~ B (n, p) = > X ~ B (33, 0.42). We have…

Q: A news article that you read stated that 52% of voters prefer the Democratic candidate. You think…

A: Population proportion()=52%=0.52Sample proportionNote: As per guidelines only first three subparts…

Q: A political candidate has asked you to conduct a poll to determine what percentage of people support…

A:

Q: Identify which of the situations below is a type I error and which is a type II error: 80% of…

A: In statistical hypothesis testing, a type I error is the rejection of a true true null hypothesis,…

Q: On September 25, 2011 Michael Vick, the quarterback for the Philadelphia Eagles broke his…

A: The sample size, i.e., the number of fans that voted, n=914.The percentage (or proportion) of fans…

Q: A political candidate has asked you to conduct a poll to determine what percentage of people support…

A: Solution:There is no estimates available, hence the sample proportion is assumed to be 0.50.The…

Q: You are a web designer process engineer for a company that sells jewelry online. You know that 35.0%…

A:

Q: A political candidate has asked you to conduct a poll to determine what percentage of people support…

A: Here, there is no information about the population parameter. Hence, use the conservative estimate…

Q: A political candidate has asked you to conduct a poll to determine what percentage of people support…

A: The formula for the sample size is as follows:

Q: A political candidate has asked you to conduct a poll to determine what percentage of people support…

A:

Q: In a recent poll, 170 people were asked if they liked dogs, and 24% said they did. Find the margin…

A:

Q: The school's newspaper reported that the proportion of students majoring in business is more than…

A: According to the given information in this question We need to identify the correct option

Q: A political candidate has asked you to conduct a poll to determine what percentage of people support…

A: Obtain the sample size of a no preliminary estimate for p. The formula of sample size is, Use EXCEL…

Q: A recent Gallup Poll interviewed a random sample of 1523 adults. Of these, 868 bought a lottery…

A: Margin of error is used to measure the error occurred in the sample. It explains the percentage of…

Q: For each scenario, use the drop-down menu to identify if the intended inference is a Confidence…

A: Given 4 scenarios to identify whether the intended inference is a Confidence Interval or a…

Q: 59% of 81 delegates in a political convention favored changing the rules to restrict the number of…

A: n= 81P^ = 0.59CI = 0.95P(-z < P <z) = 0.95∴z= 1.96    (∵ z- table)

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.