Create excel file and solve this problem in that file. please look at picture A company claims that the course they offer significantly increases the writing speed ofsecretaries. The following table gives the scores of eight secretaries before and after theyattended this course.BeforeAfter81758991657090699772931107869115 | 75Make a 90 % confidence interval for the mean Ax -Hy of the populationpaired differences, where a paired differences is equal to the score before attending thecourse minus the score after attending the course.

Let X and Y denote the before score data and after score data. A 90% confidence interval for true…

A company claims that the course they offer significantly increases the writing speed of secretaries. The following table gives the scores of eight secretaries before and after the attended this course. 81 97 75 72 65 | 90 70 69 78 | 115 | 75 69 Before After 89 93 91 110 Make a 90 % confidence interval for the mean 4x – Hy of the population paired differences, where a paired differences is equal to the score before attending the course minus the score after attending the course.

A company claims that the course they offer significantly increases the writing speed of secretaries. The following table gives the scores of eight secretaries before and after the attended this course. 81 97 75 72 65 | 90 70 69 78 | 115 | 75 69 Before After 89 93 91 110 Make a 90 % confidence interval for the mean 4x – Hy of the population paired differences, where a paired differences is equal to the score before attending the course minus the score after attending the course.

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

Related questions

Q: A sample of 16 students was taken from LIU university. These students spent an average of $170 on…

A: Given,sample size(n)=16mean(x¯)=$170sample standard deviation(s)=$25.50derees of…

Q: The group of students had a test on Statistics. The following student’s blood pressure results are…

A: Solution-: Given: α=0.05 We have following table: Subject Before (xi) After (yi) 1 70 72 2 74…

Q: A company claims that the course they offer significantly increases the writing speed of…

Q: The TOEFL scores of 8 students were researched before and after the training. The results are given…

A: From the given information using minitab we find the solution.

Q: The figure to the right shows the results of a survey in which 1011 adults from Country A, 1003…

A: Note- As per our policy we can answer only the first 3 sub-parts of a question. If you want…

Q: A random survey of 495 adults found that 59 had diabetes. Which of the following is a 98% confidence…

Q: A health professional takes the temperatures of 5 patients: 99.8 98.3 96.9 98.0 98.3

A: Given information: 99.8, 98.3, 96.9, 98.0 and 98.3. Mean=99.8+98.3+96.9+98+98.35 =98.26…

Q: The figure to the right shows the results of a survey in which 1018 adults from Country A 1015…

A: Given Information: Country Sample size (n) Sample proportion (p^) A 1018 0.37 B 1015 0.19 C…

Q: Anna's project for her introductory statistics course was to compare the selling prices of textbooks…

A: Confidence interval:Step-by-step procedure to find the confidence interval using MINITAB…

Q: To test the efficacy of a new cholesterol-lowering medication, 10 people are selected at random.…

A: we wants to bulid the 97 % confidence interval to check the efficacy of a new cholesterol -lowering…

Q: Giving a test to a group of students, the grades and gender are summarized below A C Total Male 14…

Q: Giving a test to a group of students, the grades and gender are summarized below A B C Total…

A: Obtain the 90% confidence interval for the population proportion of all female students who would…

Q: Suppose the following data are selected randomly from a population of normally distributed values.…

A: Obtain the 95% confidence interval estimate for the population mean. The 95% confidence interval…

Q: The table below shows the weight of 9 subjects before and after following a particular diet for two…

Q: A sample of 30 commuters in the New York City area yielded the following commute times in minutes:…

A: 1) a. From the given information,

Q: A random sample of nine students was selected to test for the effectiveness of a special course…

A: For the given data Find confidence interval for the mean mud

Q: To test the efficacy of a new cholesterol-lowering medication, 10 people are selected at random.…

A: Obtain the 94.1% confidence interval for the differences between the LDL levels before and after…

Q: A random sample of 560 serviced tables at a restaurant reveals that 20% of them offer tips to the…

Q: Using the information from above, with p′=0.488, q′=0.512, and n=400, what is the 90% confidence…

Q: The data below are the length (in minutes) of randomly selected children's animated film 81 77 76 75…

A: Given data is 93 , 83 , 76, 92,77, 81, 78 , 100, 78 , 76, 75sample size(n)=11sample…

Q: A random sample of 200 female high school students in India showed that 110 are on Facebook. A…

Q: 4.) The following are wait times (in minutes) at a certain DMV: 45 77 65 25 76 56 45 35 88 75 66 66…

A: Given waiting time 25,76,56,45,35,88,75,66,45,77,65,66,43,65

Q: Wildlife biologists inspect 153 deer taken by hunters and find that 32 of them carry ticks that test…

Q: At a certain Senior High School, a random sample of 10 male students was taken and found that their…

A: Here, mean is 63.36 and standard deviation is 4.62. We will use one sample t confidence interval.

Q: A survey of 800 women shoppers found that 17% of them shop on impulse. What is the 98% confidence…

Q: Here are summary statistics for randomly selected weights of newborn girls: n= 170, x= 26.9 hg, s=…

Q: What proportion of OSU students earn their undergraduate degrees in four years? A college…

Q: To test the efficacy of a new cholesterol-lowering medication, 10 people are selected at random.…

A: Solution Yo find the confidence interval we will use Excel

Q: Giving a test to a group of students, the grades and gender are summarized below A В C Total Male 9…

Q: Give a 95.5% confidence interval for μB−μA, the difference between LDL levels before and after…

A: The difference between before and after is, Before After Difference 188 187 1 114 125 -11…

Q: Gallup is a company that conducts daily opinion polls on a variety of topics. In a recent daily…

A: Given that, Sample size, n = 1000 38% of the sample said they were committed to their work.

Q: Here are summary statistics for randomly selected weights of newborn girls: n= 217, x = 32.4 hg, s =…

Q: A survey of 800 women shoppers found that 17% of them shop on impulse What is the 98% confidence…

Q: Suppose that 18% of a random sample of 2307 Miami residents said that they will donate blood in…

A: The sample proportion is given as 0.18. The sample size is given as 2307. The two-tailed z-critical…

Q: A random sample of 12 students showed the following time (in hours) of sleep 4.5 5 5.5 6 6 7 7.5 7.5…

Q: The following data are the amounts that a sample of 15 customers spent for lunch ($) at a…

Q: The figure to the right shows the results of a survey in which 999 adults from Country A, 1002…

Q: A health professional takes the temperatures of 5 patients: 99.8 98.3 96.9 98.0 98.3…

A: We have given that A health professional takes the temperatures of 5 patients: 99.8 98.3 96.9…

Q: A nationally distributed college newspaper conducts a survey among students nationwide every year.…

Q: To test the efficacy of a new cholesterol-lowering medication, 10 people are selected at random.…

A: Given that Before After 124 114 178 152 188 158 123 135 120 93 167 160 189…

Q: A coffee shop claims that it takes 115 seconds, on average, to serve their customers coffee through…

A: A. It is important to take a random sample of the orders due to the following reason: 1. Random…

Q: Here are summary statistics for randomly selected weights of newborn girls: n = 219, x= 30.9 hg, s=…

Q: A study of 4 bolts of carpet showed that their average length was 76.2 yards and the sample standard…

Q: A computer company randomly selects 100 computers from the production line to launch a new model,…

A: Given n=100,s=120, Xbar=1800 We want to find the 95% CI for population mean

Q: A survey of a random sample of 256 college students found that 36% said they frequently experience…

A: For a known sample proportion, we want an interval to be estimated, which will include the true…

Q: If a sample proportion is 0.68, which of the following could be a 90% confidence interval for the…

A: The confidence interval formula of population proportion is (p̂ ± E), where p̂ is the sample…

Q: A random sample of married people were asked "would you remarry your spouse if you were given the…

A: Given information x = 127 N = 150

Q: The group of students had a test on Statistics. The following student’s blood pressure results are…

A: given data

Q: The following table gives the weekly sales of hand gloves for a random sample of 40 weeks in store…

A: It is given that the sample size (n) is 40.

Q: 1. A survey of 800 women shoppers found that 17% of them shop on impulse. What is the 1. confidence…

A: We have to find confidence interval for the true proportion of women shoppers who shop on impulse.

Concept explainers

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.

Question

Create excel file and solve this problem in that file. please look at picture

A company claims that the course they offer significantly increases the writing speed of
secretaries. The following table gives the scores of eight secretaries before and after they
attended this course.
Before
After
81
75
89
91
65
70
90
69
97
72
93
110
78
69
115 | 75
Make a 90 % confidence interval for the mean Ax -Hy of the population
paired differences, where a paired differences is equal to the score before attending the
course minus the score after attending the course.

Expert Solution

This question has been solved!

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

SEE SOLUTION Check out a sample Q&A here

Step 1

VIEW

Step 2

VIEW

Step by step

Solved in 2 steps

SEE SOLUTION Check out a sample Q&A here

Knowledge Booster

$Point Estimation, Limit Theorems, Approximations, and Bounds$

Learn more about

Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, statistics and related others by exploring similar questions and additional content below.

Recommended textbooks for you

MATLAB: An Introduction with Applications

Statistics

ISBN:

9781119256830

Author:

Amos Gilat

Publisher:

John Wiley & Sons Inc