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: Suppose we want to estimate the proportion of teenagers (aged 13-18) who are lactose intolerant. If…

A: Given information Error = 4% = 0.04 Confidence level = 0.95

Q: marketing research department of an instant-coffee company conducted a survey of married men to…

A: It is given that sample size (n) is 100 and x is 20.

Q: It's believed that as many as 24% of adults over 50 never graduated from high school. We wish to see…

A: Givenpopulation proportion(p)=0.24Margin of error(E)=0.02confidence level=95%

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: Researchers want to know about the true proportion of adults with at least a high school education.…

A: The no. of sample size, i.e., the sampled no. of adults, n=1000. The no. of sampled adults, who have…

Q: confidence inferval for the actual percentage of students who want to pursue a college course.…

A: here from given  n = sample size  = 600 x= no of student expressed interest to purchase a college…

Q: I want to conduct a survey to find who is going to win the election for governor in various states.…

A: For the same confidence level and the same margin of error, we must have the number of people…

Q: An epidemiologist is worried about the prevalence of the flu in East Vancouver and the potential…

A: The random variable flu follows binomial distribution. X ~ B (n, p). The sample size is 337. The…

Q: 1. Out of 1,500 licensed drivers, 900 admitted that they do not like to drive at night. What is the…

A: *As per company guidelines,  we are supposed to only answer 3 subparts. For next parts kindly…

Q: Suppose we want to estimate the proportion of teenagers (aged 13-18) who are lactose intolerant. If…

A:

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

A:

Q: A Gallup survey based on telephone and face-to-face interviews with 4,220 adults in China, aged 15…

A:

Q: Suppose that we wanted to estimate the true average number of eggs a queen bee lays with 99%…

A:

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 publisher reports that 69%  of their readers own a particular make of car.  A marketing executive…

A: From the provided information,A publisher reports that 69% of their readers own a particular make of…

Q: A business school dean is contemplating proposing a change in the requirements for graduation. At…

A: It is given that sample size (n) is 100 and x is 56.

Q: .

A: It is given that 800 out of 1,000 students use Facebook during class.The sample proportion is…

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: Suppose that in the exit poll from the state of Florida during the year 2000 presidential elections…

A: Given: x=407, n=765p=xn=407765=0.532 The null and alternative hypothesis is, H0:P=0.5Ha:P>0.5 The…

Q: Suppose a new product is to be launched on the market. To gain an idea of the potential market size,…

A: Given that  Confidence level (C) = 90%  The sample proportion is within 0.02 of the true population…

Q: 1. Suppose survey results say that 69% of the adult females from a sample taken in the United States…

A: Proportion (p) = 69 %  Margin of Error (E) = 3%  Alpha = 95%  FIRSTLY calculate the confidence…

Q: It's believed that as many as 22 % of adults over 50 never graduated from high school. We wish to…

A: In general terms, the larger the sample size n, the more precise of an estimate can be obtained of a…

Q: 1. A poll of 2,500 people shows that 50% approve of a smoking ban in bars and restaurants. What is…

A:

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

A:

Q: A Gallup survey based on telephone and face-to-face interviews with 4,220 adults in China, aged 15…

A: Given information 30% smoke regularly or occasionally Margin of error = 2.3% 95% confidence interval…

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: A simple random sample is to be taken of 572 business majors in a college to estimate the proportion…

A: Given: Margin of error (E) = 0.04 Confidence level = 1.96 No information about the population…

Q: It is important for researchers to account for attrition or loss of participants during follow-up.…

A: It is important for researchers to account for attrition or loss of participants during follow-up.…

Q: Suppose we want to estimate the proportion of teenagers (aged 13-18) who are lactose intolerant. If…

A: Given information Error = 3% = 0.03 Confidence level = 0.95

Q: when does an inferential statistics problem involve either a confidence interval estimate or a…

A: Hypothesis test- It is used to test the hypothesized population mean with respect to the sample…

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: If you knew that I study reported that 67% of pre-kindergarten children ages 3 to 5 whose mother had…

A:

Q: In 2015 as part of the General Social Survey, 1131 randomly selected American adults responded to…

A:

Q: A poll by a reputable research center asked, "If you won 10 million dollars in the lottery, would…

A: Given that  Sample size n = 1175 Number of adults who would continue working, X = 856 The critical…

Q: A 2011 Gallup survey based on telephone and face-to-face interviews with 4,220 adults in China, aged…

A: Given, Margin of error(E)=2.2%=0.022 p=30%=0.30 n=4220

Q: Your state is considering raising the legal age for consumption of alcohol beverages. How large a…

A: From the provided information, Margin of error (E) = 0.01 Confidence level = 99%

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.