Fuppose that the time required to complete a 1040R tax form is normally distributed with a mean of 100 minutes and a standard leviation of 20 minutes. What proportion of 1040R tax forms will be completed in at least 105 minutes? Round your answer to at east four decimal places.

Q: 3 Calculate the Standand deviationA 25 vand to hundredths. 16/719

A: Concept : The standard deviation of a data is σ = 1N∑i=1i=Nxi-μ2    where xi is given data and N is…

Q: 110 students at a college were asked whether they had completed their required English 101 course,…

A: Total students = n = 110,  Number of students completed English 101 course = x = 81.

Q: 110 students at a college were asked whether they had completed their required English 101 course,…

A: It is given that 110 students at a college where 69 students said that they had completed their…

Q: 100 students at a college were asked whether they had completed their required English 101 course,…

A: Given information: Total number of students at a collage(n)=100. Number of students say "yes"…

Q: The payroll amounts for 26 major-league baseball teams are shown below. Aprroximately what…

A: Solution: From the given information, there are 26 major-league baseball teams. From the given…

Q: physicians

A: Number of success = x= 3145 n=5804

Q: Can you give the statistical table you have used to get the 1.96? Thank you.

A: Given that, The confidence level is, 0.95 The level  of significance is,

Q: A student receives the following grades, with an A worth 4 points, a B worth 3 points, a C worth 2…

A: We have to find gpa.

Q: Answer the following questions with a solution. 7. What is the 30th percentile of the following set…

A: As per bartleby guideline expert have to answer first question only dear student please upload other…

Q: What is the result of 2.58×0.12, including correct significant figures?

A: Given, 0.58*0.12

Q: The following table shows the percentage of children in a certain country between the ages of 3 and…

A: Given a table shows the percentage of children in a certain country between the ages of 3 and 5 who…

Q: What is the percentile rank of a student who is enrolled in 15 credits? (Hint: This is the same…

A: Given that , A survey of the population of 51 students asks how many credits students are taking and…

Q: 103 students at a college were asked whether they had completed their required English 101 course,…

A: It is given that, 103 students at a college were asked whether they had completed their required…

Q: 3. What was the median walking time in June 2021? Express your answer to the nearest hundredth.

A:

Q: 135 students at a college were asked whether they had completed their required English 101 course,…

A: Point estimate: The population parameter which is estimated by using sample statistic is termed as…

Q: Form a sample of 500 items,30 were found to be defective. The point estimate of the population…

A:

Q: 1. How do the smokers can be compared to the non-smokers based on above table? 2. Can you estimates…

A: We draw two random samples of smokers and non-smokers, of size n1 = 25 and n2 = 20 respectively.…

Q: 110 students at a college were asked whether they had completed their required English 101 course,…

A:

Q: In a city with three high schools, all the ninth graders took a Standardized Test, with these…

A: Introduction: Suppose there are k groups, such that the jth group [j = 1, 2, …, k] has nj…

Q: Out of 300 people sampled, 153 said they prefer Coke over Pepsi. What is the point estimate for the…

A: Consider that p is population proportion of ALL people that prefer Coke over Pepsi.

Q: n a city with three high schools, all the ninth graders took a Standardized Test, with these…

A: Formula : x¯ =x¯1 n1+x¯2 n2 + x¯3 n3n1+n2+n3

Q: In a city with three high schools, all the ninth graders took a Standardized Test, with these…

A: Given: City with three high schools, all the ninth graders took a standardized test, the result is…

Q: 129 students at a college were asked whether they had completed their required English 101 course,…

A: The point estimate of population proportion is sample proportion.

Q: 81 students at a college were asked whether they had completed their required English 101 course,…

A: Given,     The objective is to find the best point estimate for the proportion of students at the…

Q: Compute the standard error of the mean from the following scores; 45, 34, 65, 48, 15, 25 Round your…

A: We have to find the standard error of the mean.

Q: he margin of error for a 90% CI for a mean, when the sample size is 12, the sample average is 52,…

A: As the population standard deviation is known, we will use t distribution. Degrees of freedom =…

Q: _9. The mean annual income of workers who are college graduates is greater than Php 100,000 a year.

A: here use basic of hypothesis testing

Q: 138 students at a college were asked whether they had completed their required English 101 course,…

A: Given : x = 92  n = 138

Q: 7) A researcher at a major hospital wishes to estimate the proportion of the adult population of the…

A: Given that, Critical value: Using the z-table, the critical value at 99% confidence level is

Q: 130 students at a college were asked whether they had completed their required English 101 course,…

A:

Q: Imagine the NZ Government is interested in the effect of abolishing university fees on the number of…

A: Solution :-

Q: Compute the standard error of the mean from the following scores; 45, 34, 65, 14, 15, 25 Round your…

A: Given data: 45, 34, 65, 14, 15, 25 n = 6 To calculate: Compute the standard error of the mean

Q: A footwear retailer sold 12 pairs of sneakers for $45 each, 11 pairs of leather shoes for $140 each,…

A:

Q: 138 students at a college were asked whether they had completed their required English 101 course,…

A: Consider that p is the true proportion of students at the college who have completed their required…

Q: Lisa has entered a 95% condensate interval number (132,144 What is the estimate of the mean

A: Given 95% confidence interval for mean is (132, 144). The estimate of the mean is, Mean=132+1442…

Q: a What percent of the recruits are between ages 23 and 29 What is the probablity that a recruit is…

A: here from given information mean = 23  standard deviation = 3 here use standard normal distribution…

Q: 81 students at a college were asked whether they had completed their required English 101 course,…

A: The number of students said yes (x) is 54 and the sample size (n) is 81.

Q: A rental car company purchased a new Toyota Camry for $35,000. The company determined this asset…

A: NOTE: Refresh your page if you can't see any equations. . The company determined this asset should…

Q: Suppose that in a survey of 1,000 U.S. residents, 721 residents believed that the amount of violent…

A: From the provided information, Number of residents = 1000 721 residents believed that the amount of…

Q: A marketing manager samples 150 people and finds that 87 of them have made a purchase on the…

A: a) From the provided information, Sample size (n) = 150 Number of people who have made a purchase on…

Q: How large a sample is needed

A: Given :  Margin of error=E=3%=0.03 Significance level=α=0.01 The critical value is ,…

Q: 1) In a survey of 1200 workers, 35% said they eat at home during a typical work week. A) What is the…

A: Let,     n denote the sample size     P denote the population proportion (or some hypothesized…

Q: a hospital wants to estimate the percentage of admitted patients who receive Medicare benefits. if…

A: To calculate the minimum sample size require to be 95% sure that margin of error will fall within 4…

Q: 82 students at a college were asked whether they had completed their required English 101 course,…

A:

Q: 133 students at a college were asked whether they had completed their required English 101 course,…

A: Given, The objective is to find the best point estimate for the proportion of students at the…

Q: To two decimal places, what is the mean of these scores: 10, 15, 17, 17, 2 O 14.50

A: It is an important part of statistics. It is widely used.

Q: 85 students at a college were asked whether they had completed their required English 101 course,…

A: Best point estimate:The best point estimate of population proportion is the sample proportion.

Q: 104 students at a college were asked whether they had completed their required English 101 course,…

A:

Q: A mother is creating the family budget for next year and wants to come up with a single value to…

A: Identify the correct option that correctly describes the data.   The correct option is identified…