A new type of crank for bicycles called the Powercam relies on a pushing motion rather than a circular motion. The company that markets this crank plans a test of five riders who will travel a 100-mile route once with the Powercam and once with a conventional crank. The company claims that the new erank reduces the time needed to cover the 100 miles. The times in hours for the five riders are as Follows: Rider 1 3 4 Powercam 4.4 4.6 4.7 4.8 4.9 Conventional 5.1 5.3 5.1 4.9 5.2 Is there sufficient evidence in the data to support the claim that the new crank reduces the time needed co cover the 100 miles? Use a 5% significance level and assume that both population distributions are normal

A new type of crank for bicycles called the Powercam relies on a pushing motion rather than a circular motion. The company that markets this crank plans a test of five riders who will travel a 100-mile route once with the Powercam and once with a conventional crank. The company claims that the new erank reduces the time needed to cover the 100 miles. The times in hours for the five riders are as Follows: Rider 1 3 4 Powercam 4.4 4.6 4.7 4.8 4.9 Conventional 5.1 5.3 5.1 4.9 5.2 Is there sufficient evidence in the data to support the claim that the new crank reduces the time needed co cover the 100 miles? Use a 5% significance level and assume that both population distributions are normal

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

See similar textbooks

Similar questions

1. What type of statistical analysis should you use to test this? A)Single sample z-test. B) Single sample t-test C) Independent samples t-test D) Independent samples t-test 2. Explain why 3. What is the dependent variable 4. What is the independent variable?
The Bureau of Labor Statistics reports that the official unemployment rate for Black people was 10.4% and 4.7% for White people in February 2015. Select all correct answers for this question. O The samples of white and black people are independent. The explanatory variable is the unemployment rate. The response variable is the unemployment rate. The response variable is race.
What statistical test should be run when looking for a relationship between a student's major and their height? A) Regression B) Anova C) Two sample t for means D) Goodness of fit E) Test of association
Three restaurant servers are competing for Employee of the Month. The table below shows the number of customers each server waited on either at curbside pickup or counter service. The employee who waits on the most customers will be the Employee of the Month. Do the data in the table provide evidence that Server B is responsible for more than of all the customers at this restaurant? Justify your answer using statistical inference (that is, complete each bullet listed below). Server A Server B Server C TOTAL Number of Curbside Customers 21 15 15 51 Number of Counter Customers 39 50 17 106 TOTAL 60 65 32 157 Answer each of the bullets below. You may hand write your answer, or type in the space provided. Write the null and alternative hypothesis. Define the parameters used in the hypothesis. Check to make sure the conditions are met to assume a normal distribution. Write the formula for the test statistic that would be used. Use appropriate notation. Evaluate…
This requires manual calculation as well as analyzing data using the statistical package R. The detailed rubric for this may be located in the guide as well as the document. You will be working with the KBP dataset provided in the course space. You will also need to use the document, Questions for KBP Survey. This document has selected questions as they appeared on the questionnaire that was administered to collect the data for this project. 1. Classify the variables by the levels of measurement used. Explain your choice of the levels of measurement. 2. Using R, generate a graph to represent the sample by alcohol usage in the past 4 weeks. What can you say about alcohol usage among this sample of young persons? 3. Using R, calculate the proportion of individuals by relationship status and report in a relative frequency distribution table. Respondents # Age of Respondent Sex of Respondents Relationship Status Age at first Sexual Encounter Practice Religion number of persons use…
Consider full-time community college students as an observational unit. a) Come up with one categorical and one quantitative variable related to a full-time community college student. [You CANNOT use AGE, HEIGHT, GENDER, MAJOR]. b) Considering your categorical variable from part a), name three types of graphical displays you can use to represent that variable. c) Come up with one quantitative variable for a community college student that would have a distribution that is SKEWED RIGHT or SKEWED LEFT.
A survey asked students for their college and their satisfaction with their program. The results are provided in the tables below. Determine if there is a relationship between college and satisfaction at the 0.05 level of significance. Satisfied Not Satisfied Arts and Sciences 5 2 Education 6 1 Technology 14 12 Business 18 12 Health Profession 10 4 Social and Behavioral Sciences 8 12 H0: College and Satisfaction are independent. H1 : College and Satisfaction are dependent. Determine the p-value. What is the correct decision for this test? What is your conclusion, in context? Explain your reasoning.
f.
← Jamison Kovach Supply Company manufactures paper clips and other office products. Although inexpensive, paper clips have provided the firm with a high margin of profitability. Sample size is 200. Results are given for the last 10 samples. Sample Defectives 1 UCL 5 = 2 7 3 2 4 6 5 6 6 5 b) Has the process been in control? Based on the developed control limits, the number of defectives has been IN-CONTROL c) If the sample size were 100 instead, how would your limits and conclusions change? 7 5 The type of control chart that is best to monitor this process is p-chart a) Establish the control limits to include 99.73% of the random variation in defectives. UCL, = 0.059 (enter your response as a number between 0 and 1, rounded to three decimal places) LCLp = 0 (enter your response as a number between 0 and 1, rounded to three decimal places) 8 5 9 2 (enter your response as a number between 0 and 1, rounded to three decimal places) 10 11
2. Do men with more children have higher blood pressure? In a study, blood pressures of men with more than three children were compared with those of men with three or fewer children. Which of the following is true for this study? a) The response variable is blood pressure. O b) The explanatory variable is blood pressure. c) The explanatory variable is number ofchildren ("more than three" vs. "three or fewer"). d) Both a and c ENG
The distribution of hemoglobin in grams per deciliter of blood if approximately N(14,1) in women and approximately N(16,1) in men. Use software or Table B to find the answers. A) What percent of women have more hemoglobin than the men's mean hemoglobin? B) What percent of men have less hemoglobin than the women's mean hemoglobin? C) What percent of men have more hemoglobin than the women's mean hemoglobin?
SHORT ANSWER. Write the word or phrase that best completes each statement or answers the question. Perform the indicated goodness-of-fit test. 23) Using the data below and a 0.05 significance level, test the claim that the responses occur 23) with percentages of 15%, 20%, 25%, 25%, and 15% respectively. Response A B C D E Frequency 12 15 16 18 19