A study on the preference of high school students in the choice of readingmaterials.Descriptive researchCorrelational researchExperimental ResearchHistorical quantitative researchCausal research

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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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How productive are U.S. workers? One way to answer this question is to study annual profits per employee. A random sample of companies in computers (I), aerospace (II), heavy equipment (III), and broadcasting (IV) gave the following data regarding annual profits per employee (units in thousands of dollars). I II III IV 27.9 13.5 22.2 17.9 23.2 9.6 20.5 16.4 14.7 11.1 7.7 14.5 8.3 8.9 12.7 15.9 11.8 6.5 7.7 10.6 19.1 9.5 What are the degrees of freedom? (numerator) (denominator)(c) Find the P-value of the sample test statistic. P-value > 0.100 0.050 < P-value < 0.100 0.025 < P-value < 0.050 0.010 < P-value < 0.025 0.001 < P-value < 0.010 P-value < 0.001 (d) Based on your answers in parts (a) to (c), will you reject or fail to reject the null hypothesis? Since the P-value is greater than the level of significance at α = 0.05, we do not reject H0. Since the P-value is less than or equal to the level of significance at α = 0.05, we…
Which is NOT an example of statistical bias? Response Bias Observer Effect Recall Bias Placebo Effect
Discussion. A study on the relationship between the level socio-emotional learning and mathematical resiliency of senior high school students was conducted by a researcher. The level of socio- emotional learning was determined in relation to self-awareness, social awareness, and self- management. The table showed the results of the statistical analysis. What did the study reveal about the relationship of the two variables? Indicator p-value self-awareness 0.048 social-awareness self-management 0.190 0.054 rvalue 0.492
Using the Naïve Bayes classifier, determine whether a person described by Exercise = Yes, Rest = No, Stress = Yes is Healthy (Yes or No).
6
A report on Americans' opinions about long-term investments included data from a poll of 1,010 adults. The responses to the question "What do you think is the best long-term investment?" are summarized in the given relative frequency distribution. Response Real Estate Stocks & Mutual Funds Gold Savings Bonds Other Relative Frequency 0.30 0.25 0.20 0.15 0.10 Relative Frequency 0.05 0.00 0.32 0.21 0.19 (a) Use this information to construct a bar chart for the response data. CHOICE A 0.17 0.08 0.03 Funds Best Long-Term Investment CHOICE B (b) Write a few sentences on how people responded to the question posed. 0.20 0.15 0.15 ko. Lul M. ha. 0.10 0.10 0.05 0.05 Real Stocks & Gold Savings Boads Other Real Stocks & Gold Savings Boads Other Real Stocks & Gold Savings Bonds Other Real Stocks & Gold Savings Boads Other Estate Mutual Estate Mutual Estate Mutual Estate Mutual Funds Funds Best Long-Term Investment Best Long-Term Investment O 0.30 0.25 0.00 Ⓒ CHOICE C % of respondents answered that…
Class Frequency 8-12 13-17 14 18-22 10 23-27 4 28-32 The 75th percentile of the data presented in the table above is O a. 19 O b. 22 O c. 18.5 O d. 20 О е. 21
Age discrimination: The following table presents the numbers of employees, by age group, who were promoted, or not promoted, in a sample drawn from a certain industry during the past year. Age Under 30 30-39 40-49 50 and Over MT 23 23 29 47 Promoted Not promoted Send data to Excel 11 39 6 37 Can you conclude that the people in some age groups are more likely to be promoted than those in other age groups? Use Excel and the a=0.01 level of significance. We (Choose one) the null hypothesis. There (Choose one) enough evidence at the a=0.01 level of significance to say that people in some age groups are more likely to be promoted. X
a. Correlation coefficient between hours spend on using mobile per day and hours spend on reading books per day. b. Draw the scatter diagram of the spending hours on using mobile and reading books per day. c. Give the statistical meaning of the relationship between the spending hours on using mobile and reading books per day.
Question content area top Part 1 A poll was conducted to investigate opinions about global warming. The respondents who answered yes when asked if there is solid evidence that the earth is getting warmer were then asked to select a cause of global warming. The results are given in the accompanying data table. Use a 0.01 significance level to test the claim that the sex of the respondent is independent of the choice for the cause of global warming. Do men and women appear to agree, or is there a substantial difference? Human activity Natural patterns Don't know Male 301 159 61 Female 298 138 63 Compute the test statistic. enter your response here (Round to three decimal places as needed.) Find the critical value(s). enter your response here (Round to three decimal places as needed. Use a comma to separate answers as needed.)

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A study on the preference of high school students in the choice of reading materials. Descriptive research Correlational research Experimental Research Historical quantitative research O Causal research