MATLAB: An Introduction with Applications
6th Edition
ISBN: 9781119256830
Author: Amos Gilat
Publisher: John Wiley & Sons Inc
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- Help please!!! Parts a-carrow_forwardPp# 10: can you help me solve and understand this practice problem please? Just the last TWO, A step by step explanation would be appreciated. Thank you!arrow_forwardA large retail company conducted a manual inspection of the price scanning at checkout. In particular, they want to know if there is any relationship between scanning error rates and sale pricing practices. Here are the data they obtained Undercharged 22 Overcharged 14 Correct price 201 Test the claim at an a = 0.05 significance level. Round all values to 3 decimal places. • Fill in the expected values: State the hypotheses: O Ho: x² = 0 H₁: x² 0 O Ho: x² = 0 H₁X² / 0 OF V Undercharged Overcharged Regular Advertised Price Sale Price Correct price Regular Price 8 31 229 Advertised Sale Pricearrow_forward
- Can you please help me answer the following as I got this incorrect on my assignment: Question: Relate to this specific scenario: What is the null hypothesis? What is the alternate / research hypothesis? Which one do you statistically assess? My answer that was marked incorrect: The null hypothesis states that there is no difference or correlation between a person's heart rate and exam score. The alternative: A person's heart rate and predicted test score are related. An inferential statistical test is performed on the null hypothesis. Professor feedback to change and resubmit: not either of these words is most appropriate - scenario states prediction To measure whether test performance can be predicted based on one’s anxiety, a researcher asked his students to come to the lab 15 minutes before they were to take an exam in his class. The researcher measured the students' heart rates and then matched these scores with their exam performance after they had taken the exam. Use the…arrow_forward(4). Describe how a test can be reliable and not valid? Provide examples.arrow_forwardPlease help me answer part A and B of this homework questionarrow_forward
- I need help with this questionarrow_forwardYou read in the report of a psychology experiment: "Separate analyses for our two groups of 12 participants revealed no overall placebo effect for our student group (mean = 0.08, SD = 0.37, 4 = 0,49)and a significant effect for our nonstudent group (mean = 0.35, SD = 0.37, ¢u = 3.25, p < 0.01). 'IS The null hypothesis is that the mean effect is zero. What are the correct values of the two t statistics based on the means and standard deviations? Compare each correct talue with the critical values in Table C. What can you say about the twosided Pvalue in each case?arrow_forward10) The following results are from a regression where the dependent variable is COST OF COLLEGE and the independent variables are TYPE OF SCHOOL which is a dummy variable = 0 for public schools and = 1 for private schools, FIRST QUARTILE SAT which is the average score of students in the top quartile of SAT’s, THIRD QUARTILE SAT which is the average score of students in the 3rd quartile, and ROOM AND BOARD which is the cost of room and board at the school. The first set of results includes all the independent variables whereas the second set of results excludes the THIRD QUARTILE SAT variable. a) Based on these two sets of data, does there appear that multicollinearity is a problem (specifically, does it appear that THIRD QUARTILE SAT is highly collinear with the other independent variables? Explain. b) Calculate the VIF for THIRD QUARTILE SAT. c) Based on the VIF, do you think that multicollinearity is a problem? Explain.arrow_forward
- based on these findings, at least two hypotheses that you are testing in this project. Your hypotheses can have the same dependent variable, but they should have different independent variables. (Happiness and physical healtharrow_forwardI got this answer already, which is B. I got this answer because the p-value is greater than the significance level. This means that "There is NOT sufficient evidence to conclude that the proportion of sales he makes to women is more than 75%." I would like some confirmation whether I am right or wrong.arrow_forwardHelp me pleasearrow_forward
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