There are 150,000 households in Market City. A local phone repair shop takes a random sample of 50 households and finds that the average number of phones per household from the sample last year that needed to be repaired was 1.05 ± 0.23.Which of the following is an estimate of the total number of phones that needed repairing last year in Market City?O Between 82 and 128 phonesO Between 123,000 and 192,000 phonesBetween 105 and 23 phonesO Between 157,500 and 34,500 phones.

Given that, Confidence interval = 1.05±0.23 Number of households in the sample (n) = 50 Total number…

Answered: There are 150,000 households in Market…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

See similar textbooks

Similar questions

A researcher records the gender of each child born in the county hospital during the month of June. This researcher is measuring a discrete variable. O True O False
A company collects data from 10,000 websites about how long it takes to load the site. The number of seconds it takes to fully load the website is summarized in the relative frequency table. seconds to load relative frequency 1.4–1.6 0.0003 1.6–1.8 0.0012 1.8–2.0 0.0053 2.0–2.2 0.0181 2.2–2.4 0.0442 2.4–2.6 0.0910 2.6–2.8 0.1555 2.8–3.0 0.1861 3.0–3.2 0.1938 3.2–3.4 0.1447 3.4–3.6 0.0923 3.6–3.8 0.0447 3.8–4.0 0.0166 4.0–4.2 0.0048 4.2–4.4 0.0012 4.4–4.6 0.0002 The relative frequency histogram summarizes the same data. Expand Image The mean time to load a website is 3 seconds and the standard deviation is 0.4 seconds. Would a normal distribution be a good model for this distribution? Explain your reasoning. What proportion of websites loaded within 1 standard deviation of the mean? What proportion of websites loaded within 2 standard deviations of the mean? What proportion of websites loaded within 1 standard deviation of 2.8 seconds?…
A simple study from a local high school is interested in determining which grade has the most car accidents. Below is the data collected. 10th 11th 12th 2 13 4 9 17 8 3 14 2 1 9 1 7 1 4 Evaluated on a TI 83 calculator
The average time it takes Amazon to ship a product after it has been ordered is 21 hours. A manager at the Amazon Fulfillment Center in Moreno Valley, California thinks their average speed is faster. To test this, she tracks 58 packages to see how long it takes to ship. She obtains the following data in hours: 24.4, 23.2, 19, 21.7, 18.8, 23.4, 25.7, 22.8, 18, 24, 21, 25.4, 23.3, 22.6, 14.2, 23.2, 18.9, 21.1, 21.9, 25.3, 19.3, 24.3, 21.1, 19.4, 18.6, 22.9, 22.8, 20.7, 18.9, 20.3, 24.2, 22.9, 21.2, 25.7, 20.7, 20.6, 26, 21.5, 27.3, 26.3, 19.7, 19, 19.2, 19, 22.2, 11.3, 22.9, 21.8, 16.6, 17.1, 16.5, 15.8, 17.2, 24.1, 20.9, 20.9, 16.2, 14.5 Do you think the manager should conclude that the Fulfillment Center at Moreno Valley does ship items faster? Step 1: State the hypothesis. ? v = Step 2: Determine the Features of the Distribution of Point Estimates Using the Central Limit Theorem. By the Central Limit Theorem, we know that the point estimates are Select an answer v with distribution…
A campus researcher asked a random sample of 8 students about how many hours they work per week on average and their grade in their last math course. She then made a table for hours worked per week ? and their last math class score ?. a. Compute Sxx, Sxy, and Syy. b. Compute SST, SSR, and SSE. c. Compute the coefficient of determination, r^2. Round to four decimal places as needed. d. Determine the percentage of variation in the observed values of the response variable explained by the regression. e. State how useful the regression equation appears to be for making predictions.(circle)NOT VERY USEFUL VERY USEFUL f. Find the regression equation. Round to four decimal places as needed
110 adults with gum disease were asked the number of times per week they used to floss before their diagnoses. The (incomplete) results are shown below: # of times floss per week Frequency Relative Frequency Cumulative Frequency 12 0.1091 12 0.0818 21 2 0.1091 3 13 0.1182 46 4 17 0.1545 63 5 17 0.1545 80 6. 17 0.1545 97 7 13 110 a. Complete the table (Use 4 decimal places when applicable) b. What is the cumulative relative frequency for flossing 4 times per week?
d. Give a 95% interval estimate of the number of fatal accidents per 1000 licenses in a city where 15% of the licensed drivers are under 21.
A software company is interested in improving customer satisfaction rate from the 54% currently claimed. The company sponsored a survey of 164 customers and found that 101 customers were satisfied.
Use the same scales to construct boxplots for the pulse rates of males and females from the accompanying data sets. Use the boxplots to compare the two data sets. Click the icon to view the data sets. 40 50 60 70 80 90 100110 40 50 60 70 80 90 100110 OC. D. 40 50 60 70 80 90 100110 40 50 60 70 80 90 100110 Determine the boxplot for the women's boxplot data. A. В. 40 50 60 70 80 90 100110 40 50 60 70 80 90 100110 OC. OD. 40 50 60 70 80 90 100110 40 50 60 70 80 90 100110
Listed below are pulse rates (beats per minute) from samples of adult males and females. Find the mean and median for each of the two samples and then compare the two sets of results. Does there appear to be a difference? Male: Female: 69 89 55 95 98 67 55 58 61 57 63 56 55 78 61 64 81, 92 86 89 67 85 88 92 74 92 93 79 78 71 Find the means. The mean for males is 67.8 beats per minute and the mean for females is 82.1 beats per minute. (Type integers or decimals rounded to one decimal place as needed.) Find the medians. The median for males is 61 beats per minute and the median for females is 85 beats per minute. (Type integers or decimals rounded to one decimal place as needed.) Compare the results. Choose the correct answer below. OA. The mean is lower for males, but the median is lower for females. OB. The median is lower for males, but the mean is lower for females. O C. The mean and the median for females are both lower than the mean and the median for males. OD. The mean and the…
A researcher would like to know if the gestation period of an animal can be used to predict the life expectancy. She collects the following data. Gestation (incubation) Period Animal Life Expectancy (years) (days) Cat 63 11 Chicken 22 7.5 Dog 63 11 Duck 28 10 Lion 108 10 Parakeet 18 8.
A 2014 Pew Research Center Survey asked 2,002 adults about the intersection of politics and science. Of the survey participants, 1,281 responded "neither" when asked if they perceive scientists as politically liberal or conservative. What are the values of p′, "successes", or the estimated proportion of Americans who perceive scientists as neither politically liberal or conservative, and q′, the estimated proportion of Americans who perceive scientists as politically liberal or conservative? Answer in decimal form, rounding to the nearest hundredth.

SEE MORE QUESTIONS

Recommended textbooks for you

MATLAB: An Introduction with Applications

Statistics

ISBN:

9781119256830

Author:

Amos Gilat

Publisher:

John Wiley & Sons Inc

Probability and Statistics for Engineering and th…

Statistics

ISBN:

9781305251809

Author:

Jay L. Devore

Publisher:

Cengage Learning

Statistics for The Behavioral Sciences (MindTap C…

Statistics

ISBN:

9781305504912

Author:

Frederick J Gravetter, Larry B. Wallnau

Publisher:

Cengage Learning

MATLAB: An Introduction with Applications

Statistics

ISBN:

9781119256830

Author:

Amos Gilat

Publisher:

John Wiley & Sons Inc

Probability and Statistics for Engineering and th…

Statistics

ISBN:

9781305251809

Author:

Jay L. Devore

Publisher:

Cengage Learning

Statistics for The Behavioral Sciences (MindTap C…

Statistics

ISBN:

9781305504912

Author:

Frederick J Gravetter, Larry B. Wallnau

Publisher:

Cengage Learning

Elementary Statistics: Picturing the World (7th E…

Statistics

ISBN:

9780134683416

Author:

Ron Larson, Betsy Farber

Publisher:

PEARSON

The Basic Practice of Statistics

Statistics

ISBN:

9781319042578

Author:

David S. Moore, William I. Notz, Michael A. Fligner

Publisher:

W. H. Freeman

Introduction to the Practice of Statistics

Statistics

ISBN:

9781319013387

Author:

David S. Moore, George P. McCabe, Bruce A. Craig

Publisher:

W. H. Freeman

SEE MORE TEXTBOOKS