### Text Transcription for Educational Website**Survey Overview:**People were polled on how many books they read the previous year. Initial survey results indicate that the standard deviation \( s = 13.3 \) books. Complete parts (a) through (d) below.**Questions:****(a)** How many subjects are needed to estimate the mean number of books read the previous year within six books with 90% confidence? *This 90% confidence level requires 14 subjects. (Round up to the nearest subject.)***(b)** How many subjects are needed to estimate the mean number of books read the previous year within three books with 90% confidence? *This 90% confidence level requires \(\square\) subjects. (Round up to the nearest subject.)*---**Partial Critical Value Table:**This is a table used to determine the critical values needed for statistical confidence calculations.| Level of Confidence, \((1 - \alpha) \times 100\%\) | Area in Each Tail, \(\alpha\) | Critical Value, \(z_{\alpha/2}\) ||:--------------------------------------------------:|:-----------------------------:|:--------------------------------:|| 90% | 0.05 | 1.645 || 95% | 0.025 | 1.96 || 99% | 0.005 | 2.575 |The table shows three levels of confidence: 90%, 95%, and 99%. For each level, the corresponding area in each tail (\(\alpha\)) and the critical value (\(z_{\alpha/2}\)) are provided. These values are essential in determining the sample size and confidence intervals needed for accurate statistical estimates.**Note:** The critical value for a 90% confidence level is 1.645.---

From the provided information, Standard deviation (s) = 13.3 Confidence level = 90% Margin of error…

Answered: People were polled on how many books…

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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People were polled on how many books they read the previous year. Initial survey results indicate that s = 14.3 books. Complete parts (a) through (d) below. Click the icon to view a partial table of critical values. (a) How many subjects are needed to estimate the mean number of books read the previous year within four books with 90% confidence? This 90% confidence level requires 35 subjects. (Round up to the nearest subject.) (b) How many subjects are needed to estimate the mean number of books read the previous year within two books with 90% confidence? This 90% confidence level requires subjects. (Round up to the nearest subject.)
People were polled on how many books they read the previous year. Initial survey results indicate that s = 14.3 books. Complete parts (a) through (d) below. Click the icon to view a partial table of critical values. GOLDA (a) How many subjects are needed to estimate the mean number of books read the previous year within four books with 90% confidence? This 90% confidence level requires 35 subjects. (Round up to the nearest subject.) (b) How many subjects are needed to estimate the mean number of books read the previous year within two books with 90% confidence? This 90% confidence level requires 139 subjects. (Round up to the nearest subject.) (c) What effect does doubling the re accuracy have on the sample size? OA. Doubling the required accuracy nearly doubles the sample size. B. Doubling the required accuracy nearly halves the sample size. C. Doubling the required accuracy nearly quadruples the sample size. D. Doubling the required accuracy nearly quarters the sample size. (d) How…
do the last one please
(b) Suppose that the measurement 37 (the largest measurement in the data set) were replaced by 69. Which measures of central tendency would be affected by the change? Choose all that apply. Mean Median Mode O None of these measures
What percentage of scores fall between the mean and a z score of 1.17? Question 6 options: 6.75 percent 13.59 percent 34.13 percent 37.90 percent
Researchers studied the mean egg length (in millimeters) for a bird population. After taking a random sample of eggs, they obtained a 95% confidence interval of (45,60). What is the value of the margin of error? Choose the correct answer below. A. 15 mm B. 52.5 mm O c. 7.5 mm O D. 1.96
Question (g) Compute the three quartiles and draw a box-whisker plot showing therequired calculations.(h) Compute the 29th percentile of the data and interpret its value.
Use the histogram below to build a 95% confidence interval of the average heart rate of a person. Put your two numbers below in the spaces provided. Round to one decimal: ex: 98.2 The histogram visualizes the results of doing one thousand studies just like above. We are 95% confident that the average heart rate of a person is between ____and_____ All information needed to answer this problem is present. There is no missing information to this question.
6 Given the following data: the first quartile Q1 =(17) and Inter-quartile Range (IQR = 117); Then the third quartile Q3 equals: (Write only the number) Answer:
n a 2014 study, Michael Smith arranged to be stung by bees repeatedly on 25 locations over 38 days to record the relative pain experienced by each sting in each body area. A scale pain ratings of 1-10 were used with stings to the forearm defined to be a 5. What is the population of this study?

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