A state’s Department of Commerce reports that 82 percent of all small businesses that applied for a loan were approved. That claim makes us wonder if it is accurate If we wanted the true proportion of all applicants that were approved with 95 percent confidence and be within 5.25 percent of the true proportion, how many applications should they sample?   Suppose that we took a random sample of 1200 and found that 994 were approved for their applied loan. Is there reason to be alarmed about the claim? Build a 98 percent confidence interval. Interpret what 98 percent confidence means in this context

Q: A 2016 Pew Research poll found that 18% of cell phone owners use their phone for conducting…

A: It is given that the total number of cell phone uses are 18%, thus the population proportion is…

Q: 2. Suppose that you take a random sample of 360 people who voted in the last election in a heavily…

A:

Q: . A child dying from an accidental poisoning is a terrible incident. Is it more likely that a male…

A: Suppose p1, p2 are the true population proportions of male child and female child, who will get into…

Q: The Gallup website reported results from a recent poll of American teachers and asked if they…

A: Givenx=88sample size(n)=120significance level(α)=0.05

Q: On February 20, 2018 ncbnews.com ran a story titled "Poll: Support for gun control hits record high.…

A: Confidence interval is an interval such that the probability of the unknown parameter to be included…

Q: students are unprepared for a surprise true/false test v vers are guesses. standard deviation for…

A:

Q: 3) A corporation employs 148 sales representatives. A random sample of 60 of them was taken, and it…

A: The sample proportion is computed as follows,

Q: Suppose a cable network wants to determine the current percentage of customers who are under the age…

A: GivenMargin of error(E)=3%=0.03confidence level=90%

Q: 4) A survey investigates whether the proportion of 8% for employees who commute by car to 4). work…

A: Given population proportion = 8% n=1000 sample proportion = 12% To test appropriate hypothesis

Q: You are conducting contract research for a client that involves a questionnaire survey. The client…

A:

Q: The Malayo Colleges Mindanao recently conducted a study analyzing the privacy management habits of…

A:

Q: A researcher was interested in knowing how many people in the city supported a new tax. She sampled…

A:

Q: 5) A polling company wants to conduct a poll that has a margin of error of no more than 3%. How many…

A: We know that formula for computing sample size is, n≥Zα2 E2  P×(1-P)   where,  n = sample size  P =…

Q: 2. We want to estimate the proportion of Americans who support national marijuana legalization. We…

A: Given data,E=2%=0.02z-value at 95% confidence is Zc=1.96

Q: a) Create a 95% confidence interval for the true proportion of times The Masked Royale rolls above a…

A: Here , In Dungeons and Dragons, a 20-sided die is often used in place of the standard 6 sided die. A…

Q: A study of 420,078 cell phone users found that 132 of them developed cancer of the brain or nervous…

A: given that,possible chances (x)=132size(n)=420078success rate ( p )= x/n = 0.000314point of estimate…

Q: In a survey of 700 random households in a particular city in NCR, adults have been 2) asked if they…

A: Hey there! Thank you for posting the question. Since there are multiple questions posted, we will…

Q: 3. You plan to conduct a survey to find out what proportion of the workforce has two or more jobs.…

A:

Q: Suppose we observed 15 successes in a random sample of 60 subjects. What is the 99% confidence…

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Q: Test whether a majority of Kansas residents planned to set off fireworks on July 4th. In other…

A: Testing of population proportion is used here which is a binomial test that compare a proportion of…

Q: Twittering away The Pew Internet and American Life Project asked a random sample of 2253 U.S.…

A: Given Information: Sample size n=2253 Sample proportion p^=0.19

Q: Suppose a survey of 538 women survey. Choose the best statement of the descriptive statistic in the…

A:

Q: 4. People don’t always answer surveys honestly! Suppose that the number of students at a school who…

A: The event A is defined as the students at a school who really like the taste of canned peas, and  A¯…

Q: You plan to conduct a survey to find what proportion of the workforce has two or more jobs. You…

A:

Q: 9. A supermarket is planning to market a new ice cream. However, before marketing this ice cream,…

A: No. of people who tasted ice cream (n)=400 No. of people who liked the ice cream (x)=244

Q: The National Technology Readiness Survey sponsored by the Smith School of Business at the University…

A: Denote p2009 and p2004 as the true population proportions of spam emails deleted by Americans in…

Q: 4) A study of 12,000 cell phone users found that 125 of them developed cancer of the brain or…

A:

Q: An investigative reporter contacts a random sample of hotels, and finds a 95% confidence interval…

A: Given that  The 95% confidence interval for the proportion of hotels in the united states have…

Q: If the original claim is "The majority of student population are full time students.", then this is…

A: Proportion: The percentage of a population that falls into a certain category has been referred to…

Q: Homechooling has become very popular in the United States, and many colleges try to attract students…

A: Hypothesis testing is conducted for the parameters of the population like population mean,…

Q: Administrators at the stock exchange claim that only 8% of all companies report incorrect higher…

A: Given,

Q: A research center claims that at least 23% of adults think their taxes will be audited.  A random…

A: Yes, there is a enough evidence to reject the claim Explanation:Step 1 : Formulate the hypothesis…

Q: 2. A large university conducted a sample survey of 100 first-year students and 100 seniors. Both…

A: given that,sample one, x1 =32, n1 =100, p1= x1/n1=0.32sample two, x2 =38, n2 =100, p2=…

Q: What are two ways to get a narrower confidence interval for a proportion?

A: Two ways to get a narrower confidence interval for a proportion are:

Q: A sociologist wishes to conduct a poll to estimate the percentage of Americans who favor affirmative…

A: From the given information, she wants to use a 2003 estimate of 55% obtained from a Gallup Youth…

Q: How large a sample is needed to estimate the true proportion of these children getting adequate…

A: It is given that Proportion p = 0.45 Margin of error E = 0.025 Level of confidence = 0.99 The…

Q: 4. Dave Munson, esteemed President of RIT, proudly claims that only 2% of RIT students have ever…

A: This problem is asking you to use hypothesis testing to determine whether Dave Munson's claim about…

Q: 7. A recent survey of 500 women indicated that 29% of women over age 55 in the study were widows.…

A: Givensample size(n)=500p^=29%=0.29confidence level=90%

Q: Suppose we wish to estimate the percentage of all taxpayers that want the current tax system…

A: The random variable current system follows binomial distribution. The sample size is 1310. The…

Q: A national survey of 2500adult citizens of a nation found that 25​% dreaded​ Valentine's Day. The…

A: Given that sample size is n=2500. Let p denote the true population proportion of adults those…

Q: Suppose you are with a health agency that wants to estimate what percentage of Ohioans really has…

A: Given that the margin of error is 2%=0.02 Confidence level is 95% Therefore, the significance level…

Q: A magazine publisher wishes to determine what proportion of current subscribes will renew. The…

A: we have given that  sample size n=200 and favorable cases x=108  sample proportion p^= x/n =108/200…

Q: One of the more popular statistics reported in the media is the​ president's job approval rating.…

A: As per the informationProportion of the population who approve of the job that the sitting president…

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.