Is there evidence that mean taxi time is greater

Assignment Help Basic Statistics

Reference no: EM13139452

.Suppose that as a somewhat frustrated frequent flyer that often uses the Atlanta Hartsfield Airport, you feel that taxi times there are longer than at other comparable U.S. airports. According to the U.S. Bureau of Transportation Statistics, the average taxi out time at Large Hub Airports in the U.S. was 18.5 minutes in 2007. Data File ATL Taxi Times gives taxi out times for a random sample of 100 flights in July 2007 at the Atlanta Hartsfield Airport.

a.At the .05 level of significance, is there evidence that the mean taxi time at the Atlanta Airport in July 2007 was greater than 18.5 minutes?

b.Suppose you used a .01 level of significance. Would that change your decision in terms of the problem in part a? Explain why or why not.

1. State H0.
2. State H1.
3. State the value of α.
4. State the value of the test statistic.
5. State the p-value.
6. State the decision in terms of H0 and why.
7. State the decision in terms of the problem.

Reference no: EM13139452

Questions Cloud

Summarize the book of lamentations : Summarize the book of Lamentations using, explaining, and identifying the genre of Prophecy. Identify the key theme, major events, and major personalities.

How many grams of ethylene glycol must be added : How many grams of ethylene glycol C_2H_6O_2 must be added to 1.00 kg of water to produce a solution that freezes at -3.44 C?

What is the market rate of return : Southern Gas recently paid a $2.75 annual dividend on its common stock. This dividend increases at an average rate of 4% per year. The stock is currently selling for $27.50 a share. What is the market rate of return?

Determine weston cost recovery : He does not elect immediate expensing under section 179. On September 15,2012 Weston sell the machine. Determine Weston's cost recovery for 2011

Is there evidence that mean taxi time is greater : Suppose you used a .01 level of significance. Would that change your decision in terms of the problem in part a? Explain why or why not.

Daniel and melzar research question : The Old Testament prophet Daniel proposes a test regarding diet. In this research question, Daniel and Melzar conduct a test regarding diet and demonstrated the use of a stated or implied research question and/or hypothesis.

What is the rate of return on this security : The preferred stock of Erie Railroad Ties pays an annual dividend of $8.20 and sells for $61.70 a share. What is the rate of return on this security?

Held-to-maturity debt securities : On July 1, 2011, Patton Company should increase its Held-to-Maturity Debt Securities account for the Scott Co. bonds by:

Define a set of digital scales is required to measure a load : A set of digital scales is required to measure a load of 1000 N with an accuracy of ±1 N. Determine the minimum output resolution of the required ADC.

User Account

All Pages