The time required for a person to complete the 2020 U.S. Census “long” form is normally distributed with a mean of 40 minutes and a standard deviation of 10 minutes. The slowest 10% of the citizens would need at least how many minutes to complete the form?

The time required for a person to complete the 2020 U.S. Census “long” form is normally distributed with a mean of 40 minutes and a standard deviation of 10 minutes. The slowest 10% of the citizens would need at least how many minutes to complete the form?

A First Course in Probability (10th Edition)

10th Edition

ISBN:9780134753119

Author:Sheldon Ross

Publisher:Sheldon Ross

Chapter1: Combinatorial Analysis

Section: Chapter Questions

Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...

See similar textbooks

Related questions

Q: Consider the following 10 exam scores: 28, 57, 58, 64, 69, 74, 79, 80, 83, and 85 Find the…

A: According to the provided information, the exam score is as follows: 28, 57, 58, 64, 69, 74, 79, 80,…

Q: The distribution of the lengths of a commercially caught fish is bell-shaped with mean 24 cm and…

A: the PDF of normal distribution is = 1/σ * √2π * e ^ -(x-u)^2/ 2σ^2standard normal distribution is a…

Q: middle 99.7% of car costs are between what values

A: Given that Mean(μ) = $22,000 Standard deviation (σ) = $2000 We know that 68-95-99.7 Empirical…

Q: What

A: Explanation and solutions is given below....

Q: Seventy-six percent of Americans favor spending government money to develop alternative sources of…

A: Given that p = 75% and. n = 140 By using the Binomial distribution

Q: If the average weight for cats is 12 pounds and the standard deviation is 2 pounds. 68 percent of…

A: Given data: If average weight for cats = 12 pounds standard deviation = 2 pounds. To find: 68% of…

Q: Suppose ACT Reading scores are normally distributed with a mean of 21.3 and a standard deviation of…

A: Mean()=21.3standard deviation()=6

Q: According to Chebyshev's Theorem, within how many standard deviations from the mean would you find…

A: From the provided information, Let within k standard deviations from the mean we find at least 47.5%…

Q: The average daily points for my fantasy baseball team are {4.1, 5.7, 3.8, 4.7, 4.7, 5.5, 4.1, 2.7,…

A: Solution: Note: Hello! As you have posted more than 3 sub parts, we are answering the first 3…

Q: Find the standard deviation for the population data set. You must clearly show your work with…

A: Given data 2, 5, 9, 11, 13 Mean, x = ∑i xin= 2+5+9+11+135 = 8 xi (xi-x¯) (xi-x¯)2 2 -6 36 5…

Q: The mean height for women in the United States is approximately 64.5 inches with a standard…

A: Formula : Z =(X - μ)/σ

Q: developmental psychologist is interested in studying how long babies gaze at a photograph of a human…

A: Given data, 12, 15, 16, 20, 20, 27 Sort the data in ascending order. 12,15,16,20,20,27

Q: Suppose ACT Reading scores are normally distributed with

A: From the given information, μ=21.3σ=6 A university plans to award scholarships to students whose…

Q: Suppose phone bills have a mean of $78 and a standard deviation of $8. How much would a phone bill…

Q: Hogie lizards have tail lengths that are normally distributed with a mean of 22.5 cm and a standard…

Q: The sample mean is the point estimator of 18

Q: Each year students in a local school district write a national examination. The average on this…

A: Average of a dataset is the mean value of the observations in the data and it is computed by…

Q: A standardized test has a pop. mean of 152 and a standard deviation of 16. Molly scores at the 91st…

Q: As reported in Runner's World magazine, the times of the finishers in the New York Cit km run are…

Q: Use the magnitudes (Richter scale) of the 120120 earthquakes listed in the accompanying data table.…

A: Given that,120 magnitudes of earthquake,We want to find the range, variance and standard…

Q: In an area when customers face technical difficulty with their Internet cable hookup may call an 800…

A: Given: a=30 secondsb=10 minutes

Q: 95% of 80 night students scored between 70% and 80% on a quiz. If this data is normally distributed,…

A: Given: Total number of students n=80. let X denote the marks of students then, X ~N(µ,…

Q: Calculate the mean, median and standard deviation of these five numbers: 7, 19, 5, 12, 3

A: Mean: For a set of n observations, x1, x2, ... , xn, mean is defined as,…

Q: A mechanic sells a brand of automobile tire that has a life expectancy that is normally distributed,…

A: Given:Mean

Q: Suppose you organized a 10-kilometer race in which the times were normally distributed with a mean…

A: Let X be any selected finishing time. Here, we have to find the percentage of runners took longer…

Q: Suppose ACT Reading scores are normally distributed with a mean of 21.3 and a standard deviation of…

A: Given DataMean = 21.3Standard Deviation = 6Top 5 % is given by Finding the Z-value corresponding to…

Q: Disability causes 48% of all mortgage foreclosures. Given that 20 mortgage foreclosures are audited…

A: Here's if we consider Binomial distribution then probability of success is 0.48 and number of trial…

Q: A Gallup poll wants to determine the mean number of books Americans read each year. How many…

A: The population standard deviation is .The margin of error is The level of Confidence level is .

Q: The weekly revenue earned by a certain restaurant has a mean of $118,500 and a standard deviation of…

A: GivenMean(μ)=118500standard deviation(σ)=16800

Q: onsider a data set: 1, 2, 5, 6, 7, 6. Find the range, variance, and standard deviation for this data…

A: the given data is x=1, 2, 5, 6, 7, 6

Q: Find the standard deviation of the following data: 13,18,13,14,13,16,14,21,13

A: Given data is13, 18, 13, 14, 13, 16, 14, 21, 13Sample size(n)=9

Q: As a group, the Dutch are among the tallest people in the world. The average Dutch man is 184 cm…

A: given data normal distribution μ = 184σ = 8P(170<x<180) = ?

Q: A group of customer service surveys were sent out at random. The scores were 40, 70, 80, 00, 50, 40,…

Q: With the extra data value, the range, standard deviation, and variance is?

A: Given data: 3.31 2.79 2.83 1.97 1.69 2.54 2.46 3.44 3.93 1.59 2.86 1.61 2.57 4.02 2.49 2.42…

Q: A mechanic sells a l a brand d of automobile tire that has a life expectancy that is normally…

A: The given data is as follows:Population mean, Population standard deviation,

Q: Suppose you made 5 measures of your walking stride and got the following values: 0.81 m, 0.87 m,…

A: 0.81,0.87,0.79,0.84,0.83

Q: If this 3-year-old boy grows up to be a man with a height at the same percentile, what will his…

A: The population mean is 70 and population standard deviation is 3.

Q: If the weight (in pounds) of fish in my pond is normally distributed with mean 8 and standard…

A: X follows a Normal distribution with mean = 8 and S.D = 2 Then z=(x-mean)/SD = (x-8)/2 follows…

Q: If you buy one ticket everyday for 365 days, find the mean and standard deviation for the numbers of…

Question

Expert Solution

This question has been solved!

Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.

This is a popular solution!

SEE SOLUTION Check out a sample Q&A here

Step 1

VIEW

Step 2

VIEW

Trending now

This is a popular solution!

Step by step

Solved in 2 steps with 1 images

SEE SOLUTION Check out a sample Q&A here

Similar questions

There are eight patients waiting in a doctor's waiting room. They have been waiting for 9 minutes, 2 minutes, 5 minutes, 4 minutes, 12 minutes, 7 minutes, 8 minutes, and 11 minutes. Calculate the population standard deviation for the patients' wait times (in minutes). Round to the nearest hundredth as needed.
A developmental psychologist is interested in studying how long babies gaze at a photograph of a human face. To test this question, she shows a picture to a sample of six babies and records the length of their gaze in seconds. The data are as follows: 12, 17, 18, 20, 20, 29. Calculate the mean, median, mode, range, variance and standard deviation for the sample.
It has been reported that 84% of federal government employees use e- mail. If a sample of 235 federal government employees is selected, find the mean, variance, and standard deviation of the number who use e-mail. Round your answers to three decimal places. a. Find mean
Suppose SAT Writing scores are normally distributed with a mean of 488 and a standard deviation of 113. A university plans to award scholarships to students whose scores are in the top 10%. What is the minimum score required for the scholarship? Round your answer to the nearest whole number, if necessary.
A Gallup poll wants to determine the mean number of books Americans read each year. How many subjects are needed to estimate the average number of books Americans read with a margin of error of 0.77 books with 95% confidence?Initial results of the Gallup poll indicate that the population standard deviation is 6.2 books.Round your answer up to the next integer.
The ages in years of a random sample of shoppers at a gaming store are shown. Determine the range, mean, variance, and standard deviation of the sample data set 12,17,23,14,17,16,20,17,13,15
The life span of Duracell batteries is normally distributed. The mean life span is 10,502 hours an the standard deviation is 415 hours. If 66,500 duracell batteries are manufactured, approximately how many of those batteries last at least 9,850 hours? A 39,900 B. 46,600 C. 59,900 D. 62,600
A mechanic sells a brand of automobile tire that has a life expectancy that is normally distributed, with a mean life of 35,000 miles and a standard deviation of 2100 miles. He wants to give a guarantee for free replacement of tires that don't wear well. How should he word his guarantee if he is willing to replace approximately 10% of the tires? Click to view page 1 of the table. Click to view page 2 of the table. Tires that wear out by miles will be replaced free of charge. (Round to the nearest mile as needed.)
Find the mean and standard deviation of the following numbers: 35,18,12,32,35,75,32,26,18
a quantitative data set has mean 25 and standard deviation 5. what percentage of the observations lie between 15 and 35
The SAT and ACT college entrance exam are taken by thousands of students each year. The mathematics portions of each of these exams produce scores that are approximately normally distributed. In recent years, SAT mathematics exam scores have averaged 480 with standard deviation 100. The average and standard deviation for ACT mathematics scores are 18 and 6, respectively. a. An engineering school sets 550 as the minimum SAT math score for new students. What percentage of students will score below 550 in a typical year? b. What score should the engineering school set as a comparable standard on the ACT math test?
A biologist found the wing span of a group of MONARY butterflies to be normally distributed with a mean of 53.7 mm and a standard deviation of 2.5 mm. What percent of the butterflies have the following wingspan round to one Decimal decimal place what percent is less than 48.5 mm What percent is between 50 and 56 mm