Mearn.zybooks.com/zybook/MAT-240-J4373-0LApplied Statistics home > 7.1: Hypothesis test for a population proportionsufficient evidence exists to conclude that the majority of customers prefer the window seat.Feedback?CHALLENGE7.1.3: Hypothesis test for a population proportionACTIVITY3876741891676 q3zay7Jump to level 1An airline company is interested in improving customer satisfaction rate from the 63% currently claimed.The company sponsored a survey of 198 customers and found that 137 customers were satisfied.Determine whether sufficient evidence exists that the customer satisfaction rate is higher than the claim bythe company.What is the test statistic z? Ex: 1.23What is the p-value? Ex: 0.456Does sufficient evidence exist that the customer satisfaction rate is different than the claim by the companyat a significance level of a = 0,1? Select vCheckNextFeedback?68°Fo search49PrtScInsertCF5F9F10F11F12F2F3F423$4468.9.ERTYJKLDD D-

The p-value is obtained from the standard Normal table or z-table. The test is two-tailed. Observe…

Answered: Hypothesis test for a population…

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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Which of the following Research questions utilizes one-sample z-test as Test Statistics? * Does Academic Resiliency differ between College Students and College Droupouts? Does Self-esteem increases as Parent Attachment increases? Does the Student's Verbal SAT Score significantly differ from the Population? Does Section 1 have higher quiz score than Section 2?
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A researcher finds the following sample values: 2, 8, 6, 2, 7, 3, 4, 4, 5, 6, 7 At the .03 level, is there evidence to indicate the mean differs from the population mean of 2.15? 1. Critical Value (start with negative and separate with a comma if there are 2) 2. Test statistic 3. 3-decimal p-Value 4. Where is the test statistic on the graph Put: L-Left, M-Middle, R-Right
Company records indicate that less than 24% of employees commute to work using public transportation. You suspect this is incorrect and for a sample of 157 employees, and find that 18% of them take public transportation to work. Test the claim using a 10% level of significance. What is the p-value for this test?
Since an instant replay system for tennis was introduced at a major tournament, men challenged 1413 referee calls, with the result that 426 of the calls were overturned. Women challenged 742 referee calls, and 228 of the calls were overturned. Use a 0.05 significance level to test the claim that men and women have equal success in challenging calls. Identify the test statistic. z= ? (Round to two decimal places as needed.) Part 3 Identify the P-value. P-value= ? (Round to three decimal places as needed.) Part 4 What is the conclusion based on the hypothesis test? The P-value is ▼ greater than or less than the significance level of α=0.05, so ▼ fail to reject or reject the null hypothesis. There ▼ is not sufficient or is sufficient evidence to warrant rejection of the claim that women and men have equal success in challenging calls. Part 5 b. Test the claim by constructing an appropriate confidence interval. The 95% confidence…
1 Jump to level 1 A pipes manufacturer makes pipes with a length that is supposed to be 11 inches. A quality control technician sampled 32 pipes and found that the sample mean length was 11.09 inches and the sample standard deviation was 0.2 inches. The technician claims that the mean pipe length is not 11 inches. What type of hypothesis test should be performed? Select What is the test statistic? Ex: 0.123 What is the number of degrees of freedom? Ex: 20 Does sufficient evidence exist at the a= 0.05 significance level to support the technician's claim? Select Check HIN 60°F
1st box is: Do not reject or Reject 2nd box is: do not provide or provide 3rd box is: greater than or the same as or different from or less than
Salma claimed that the gas price in Blue Park neighborhood (mean of $3.65) is higher than that in Green Spring (mean of $3.59). She obtained the t-value of 2.223 after calculating data from 6 gas stations in Blue Park and 5 gas stations in Green Spring. Use the chart below and determine if Salma's claim is supported! Table 10-3. Critical values of "t" significance level p= 0.05 significance level p= 0.01 TP 1 12.706 63.657 2 4.303 9.925 3 3.182 5.841 2.776 4.604 5 2.571 4.032 6 2.447 3.707 7 2.365 3.499 2.306 3.355 9 2.262 3.250 10 2.228 3.169 11 2.201 3.106 Copy the following into your text box, fill in the blanks, and answer the questions A. The degree of freedom is: B. The t-calculated value is: and the t-critical value is : C. Comparison: t-calc t-crit (answer with ()) D. Is the null hypothesis accepted or rejected? Explain how you determined that! Also, explain what it means to reject or accept the hypothesis! E. Explain if Salma's claim is supported based on your t-value…
Stress levels measured to scale among top company executives are given by the sample data: 98, 75, 92, 80, 86, 91. Find the 98% Confidence Interval for the mean stress level among these executives. O 71.29 to 80.45 O 75.50 to 98.50 89.60 to 82.24 85.23 to 89.64
Dr. Smith is examining the development of moral reasoning in children. Seven children (11-years old) are assessed three times over the year. The children are given moral reasoning scenarios. Higher scores indicate higher levels of moral reasoning. Time 1 Time 2 Time 3 5 6 10 4 7 9 8 8 9 7 9 7 6 5 10 3 5 7 2 2 4 Identify and calculate the appropriate test statistic.Make sure to report the degrees of freedom for the statistical test (if appropriate). State your conclusions (use a two-tailed test with a = .05 for all tests). Compute an effect size.

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