A survey was conducted that asked 976 people how many books they had read in the past year. Results indicated that x= 14.2 books and s= 17.7 books. Construct a 90% confidence interval for the mean number of books people read Interpret theConstruct a 90% confidence interval for the mean number of books people read and interpret the result. Select the correct choice below and fill in the answer boxes to complete your choice.(Use ascending order. Round to two decimal places as needed.)O A. There is 90% confidence that the population mean number of books read is between andO B. If repeated samples are taken, 90% of them will have a sample mean betweenandOC. There is a 90% probability that the true mean number of books read is between andO Time Remaining: 00:58:23NextStatcrunch350 PMO 67°F Sunnyヘ回12/1/2021P Type here to searchDELLF9F10F11F12PrtScrInsertDeleteF3F4F5F6F7F8EscF1F2@#$%&Backspace234671WERYUTabEnterASDJKCaps Lock

Given : Sample Size, n = 976 Sample Mean, x̄ = 14.2 sample standard…

Answered: A survey was conducted that asked 976…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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Provide a set of 20 data points that has a mean of 20,a median of 25,an IQR of 10 and a sample standard deviation between 9 and 12.All data points must be positive.Explain in detail the plan you made and used to create the data set,any challenges you had and how you handled them.
The average house has 15 paintings on its walls. Is the mean larger for houses owned by teachers? The data show the results of a survey of 16 teachers who were asked how many paintings they have in their houses. Assume that the distribution of the population is normal. 18, 15, 17, 14, 16, 17, 18, 15, 15, 14, 14, 14, 15, 15, 16, 18 What can be concluded at the a = 0.05 level of significance? a. For this study, we should use Select an answer b. The null and alternative hypotheses would be: Но: Select an answer v H1: Select an answer v c. The test statistic ? v = (please show your answer to 3 decimal places.) d. The p-value = (Please show your answer to 4 decimal places.) e. The p-value is ? va f. Based on this, we should Select an answer v the null hypothesis. g. Thus, the final conclusion is that ... O The data suggest the population mean is not significantly more than 15 at a = 0.05, so there is sufficient evidence to conclude that the population mean number of paintings that are in…
Suppose a researcher wants to test if the average diastolic blood pressure in African-Americans is different than the average diastolic blood pressure in the general population. Note that the average diastolic blood pressure in the general population is 70 mmHG. The researcher retains the null hypothesis, so she therefore concludes... Group of answer choices The mean diastolic blood pressure in African-Americans is equal to that of the general population The mean diastolic blood pressure in African-Americans is different than that of the general population
Determine whether the underlined number is a statistic or a parameter. A sample of employees is selected and it is found that 55% own a vehicle.
The mean score for a very difficult test is 14.6 points. Which one of the following is most likely to be the median? Question 12 options: 12.3 14.6 15.2 17.5
Three statistics classes (50 students each) took the same test. Shown below are histograms of the scores for the classes. Use the histograms to answer the question. Which class do you think performed better on the test? a.Class 2, because it has different mean and median and 70% of class 2 scored at or above the medians of 1 and 3. b. Class 2, because it has the highest median and 70% of class 2 scored at or above the medians of 1 and 3. c. Class 1, because it has the smallest median and 70% of class 1 scored at or above the medians of 2 and 3. d. Class 3, because 74% of class 3 scored at or above the medians of 1 and 2. e. Class 2, because it has the highest median and 50% of class 2 scored at or above the medians of 1 and 3.
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Use the properties of the mean and median to determine which are the correct mean and median for the following histogram. Relative Frequency 0.30 0.25 0.20- 0.15 0.10- 0.05- 0 Choose the correct answer. O Mean is 4.2 and median is 4.5. O Mean is 5.1 and median is 2.1. O Mean is 2.4 and median is 2.6. O Mean is 4.1 and median is 4.6.
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