Search results for 'Length of prec XQuiz: Exam 3 Part 3: Inferential St XLab 12: Astronomy Laboratory 10 xLength of pregnancy in weeks fo xhttps://hartnell.instructure.com/courses/19398/quizzes/87174/take/questions/1487992Get Tutoring(Hartnell College)• Students must work alone• Students will have a single attempt• The exam will be available from Monday 12/7 until late PM on Tuesday 12/8Notes:• If a screen loads incorrectly, or you believe an image is missing, reload the page• The grade you see is not your actual grade. as some questions require my direct input. The last question is extra creditQuestion 510 ptsA random sample of monthly income yielded the data below.a = $2400s = $400n = 1311. Whatthe point estimate for mean monthly income?[ Select ][ Select ]2. Construct the 95% confidence interval for mean monthly income.• PreviousNext >Not savedSubmit QuizHARTNELLCOLLEGE9:51 PM4/28/202123下出

Question 5 10 pts A random sample of monthly income yielded the data below. i = $2400 s = $400 n = 131 1. What is the point estimate for mean monthly income? I Select ] 2. Construct the 95% confidence interval for mean monthly income. I Select ) >

Question 5 10 pts A random sample of monthly income yielded the data below. i = $2400 s = $400 n = 131 1. What is the point estimate for mean monthly income? I Select ] 2. Construct the 95% confidence interval for mean monthly income. I Select ) >

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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This Question. Question Help ▼ In a test of the effectiveness of garlic for lowering cholesterol, 49 subjects were treated with raw garlic. Cholesterol levels were measured before and after the treatment. The changes (before minus after) in their levels of LDL cholesterol (in mg/dL) have a mean of 0.2 and a standard deviation of 23.2. Use a 0.05 significance level to test the claim that with garlic treatment, the mean change in LDL cholesterol is greater than 0. What do the results suggest about the effectiveness of the garlic treatment? Assume that a simple random sample has been selected. Identify the null and alternative hypotheses, test statistic, P-value, and state the final conclusion that addresses the original claim. H: µ<0 mg/dL H:µ<0 mg/dL Determine the test statistic. (Round to two decimal places as needed.) Determine the P-value. (Round to three decimal places as needed.) State the final conclusion that addresses the original claim. V Ho. There is V evidence to conclude…
In a study on running and happiness, runners indicated the number of miles they ran in a day and their subsequent score on a Happiness Survey (higher score = greater happiness). Runner # of miles (x) Happiness Score (y) 1 16 12 2 4 3 12 14 4 2 8 For these data: The mean of miles run is: 8.50 The mean of the Happiness scores is: 10.00 The standard deviation of the Miles scores is: 5.72 The standard deviation of the Happiness scores is: 3.16 In your submission, please include a copy of the SPSS or Excel output and answer the following: A. What is the r and r? value? B. Based on Pearson's r and r2 value, describe the relationship (direction/strength) that exists between # of miles run and Happiness scores. C. Create a scatterplot for the data using Excel or SPSS (include output in your submission). D. Insert the prediction line from Excel/SPSS on your scatterplot.
(c) After you obtain your ten observations, you compute the mean number of hours of sleep. Is this a statistic or a parameter? Why?
Intelligence Quotient (IQ) scores are normally distributed with a mean of 100 anda standard deviation of 15.i. To qualify for membership of Mensa, the organization for the “intellectuallyvery superior”, one requires an IQ score above 131.5. What percentage ofpeople meet the Mensa eligibility requirement? ii. If we redefine the category of ‘intellectually very superior” to be scores inthe top 2.28 %, what does the minimum score now become for Mensamembership eligibility? iii. If 25 people are randomly selected for an IQ test, find the probability thattheir mean IQ score is between 95 and 105.
Page 2 of 21 8. Selling Cars: You sell a brand of automobile tire that has a life expectancy that is normally distributed with a mean life of 30,000 miles and a standard deviation of 2500 miles. You want to give a guarantee for free replacement tires if the tires wear out too soon, but you can only afford to give free replacements on approximately 5% of the tires you sell. How should you word your free replacement guarantee? Draw, shade and label a normal curve to illustrate your results.
Test the claim that for the population of statistics final exams, the mean score is 79 using alternative hypothesis that the mean score is different from 79. Sample statistics include ?=17, x¯=80, and ?=16.s=16. Use a significance level of ?=0.01.. (Assume normally distributed population.)The test statistic is
Just part B please
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Data set 18 includes "attractive" ratings of male dates by the female dates. The summary statistics are n=199, x-6.19, s-1.99. Use a 0.01 significance level to test the claim that the population mean of such ratings is less than 7 Find H, and H₁ for this claim. O Ho: mean>7, H1: mean-7 Ho: mean7 Ho: mean-7, H1: mean<7 2
Mr 8. The results for an IQ quiz taken by 8 students from Ze Class A and Class B are shown below. The fal maximum score for the quiz is 25. we Class A: 4, 6, 6, 7, 8, 10, 11, 12 Class B: 0, 1, 1, 2, 3, 14, 17, 25 (i) Calculate the mean and standard deviation for Class A and Class B. Show your working clearly.
8235#/full Pork... EmblemHealth Fin... ACCESS HRA - ACC... Account Link - ACC.. The mean score on this test is: 6.06 The median score on this test is: 6 Add Work Question 2 Find the five-number summary for the following data set. 87 84 89 88 89 81 82 89 88 84 Min Q1 Median Q3 Max 81 82 887.5 88 89 Add Work Question 3 The boxplots below shows salaries for Construction workers and Teachers Construction Teacher