# ULIH Sara is a big hip-hop music fan. Her friend Matt is a big rap music...

###### Question:

ULIH Sara is a big hip-hop music fan. Her friend Matt is a big rap music fan. They each have a huge library of songs in their digital music libraries. They each randomly sample 50 songs from their libraries and record the lengths of the songs selected. The average of the selected hip hop songs was *, - 245 seconds with a sample standard deviation of 5 seconds. The average of the selected rap songs was X - 275 seconds with a sample standard deviation of 6 seconds. They would like to know if the average length of hip-hop songs is different than the average length of rap songs. (a) What are the appropriate null and alternative hypotheses for this test? O Hox. -M2-0 HiM - co она: м. - д. = 0 H.: -420 H:- 0 O Ho - My < 0 M.: - My > 0 (b) Calculate the test statistic. (Round your answer to two decimal places.) (c) Assume for purposes of this study, the degrees of freedom are 80. At a 5% significance level, what is the critical value for the test? (Round your answer to two decimal places. Just give the value of the critical value, no negative or positive sign)

#### Similar Solved Questions

##### In developing projected financial​ statements, with what row item does one​ start? A. Revenues B. Cost...
In developing projected financial​ statements, with what row item does one​ start? A. Revenues B. Cost of Goods Stole C. Earnings D. Cost of Goods Sold E. Cash...
##### Required information Problem 12-5A Partner withdrawal and admission LO P3, P4 [The following information applies to...
Required information Problem 12-5A Partner withdrawal and admission LO P3, P4 [The following information applies to the questions displayed below.] Meir, Benson, and Lau are partners and share income and loss in a 1:4:5 ratio (in percents: Meir, 10%; Benson, 40%; and Lau, 50%). The partnership's...
##### Meriam, Engineering Mechanics: Dynamics, 9e Help | System Announcements PRINTER VERSION BACK NEXT > Chapter 3,...
Meriam, Engineering Mechanics: Dynamics, 9e Help | System Announcements PRINTER VERSION BACK NEXT > Chapter 3, Practice Problem 3/017 The inclined block A is given a constant large rightward acceleration a. Determine the range of values of e for which block B will not slip relative to block A, re...
##### Problem 17.46 A 8.1-4F capacitor is charged by a 150-V battery (see (Figure 1) a) and...
Problem 17.46 A 8.1-4F capacitor is charged by a 150-V battery (see (Figure 1) a) and then is disconnected from the battery. When this capacitor (Ci) is then connected (see (Figure 1) b) to a second(initially uncharged capacitor C, the final voltage on each capacitor is 12 V. Part A What is the valu...
##### How do you solve \frac { x - 5} { x } + \frac { 1} { 6} = \frac { - 1} { x }?
How do you solve \frac { x - 5} { x } + \frac { 1} { 6} = \frac { - 1} { x }?...
##### True or false !
True or false !...
##### A 1.0 Maqueous solution of which soluble salt will have the lowest freezing point? NaCl MgCl2...
A 1.0 Maqueous solution of which soluble salt will have the lowest freezing point? NaCl MgCl2 Not sure OCaCl2 Na3PO4...
##### Page 1JUL 13 Question 15 (8 points) A city has located in a specific geographic area....
Page 1JUL 13 Question 15 (8 points) A city has located in a specific geographic area. It has several snowy days. On 86 of 350 randomly selected days it snows. Find a 99% confidence interval for the true proportion of days on which it snows. D DC - Paragraph BIU- A © « E l . Previous Page ...
##### Year 2000 GDP Deflator (Price Index, 2009 = 100) 81.9 83.8 85.0 2001 2002 2003 2004...
Year 2000 GDP Deflator (Price Index, 2009 = 100) 81.9 83.8 85.0 2001 2002 2003 2004 2005 & 2007 Nominal GDP (in Billions of Dollars) 9,817 10.128 10.469 10,960 11,685 12,422 13,178 13,808 14,291 13,939 14,524 15,518 16,163 16,768 17,393 18,037 18,569 2008 2009 2010 2011 2012 2013 2014 2015 2016 ...
##### 1. +14 points My Notes Ask Your Teacher The potential at point P in an electric...
1. +14 points My Notes Ask Your Teacher The potential at point P in an electric field is 633 V. (Let's denote the electric potential energy as UE.) (a) What is the electrical potential energy of a proton placed at P, in eV and in joules? (b) What is the electrical potential energy of an electron...
##### Earth has a radius of 6.38× 106 m and rotates with a period of 23.9 hours....
Earth has a radius of 6.38× 106 m and rotates with a period of 23.9 hours. Find the speed of an object (a) on the equator and (b) in Las Vegas (latitude: 36.2° north)....
##### ?(Presentvalue of an uneven stream ofpayments?)You are given three investment alternatives to analyze....
(Present value of an uneven stream of payments)You are given three investment alternatives to analyze. The cash flows from these three investments are as follows:a. What is the present value of investment A at an annual discount rate of 12  percent?(Present value of an uneven str...
##### 10. -/2 points SerCP11 15.2.P.003. My Notes Ask Your Teacher Rocket observations show that dust particles...
10. -/2 points SerCP11 15.2.P.003. My Notes Ask Your Teacher Rocket observations show that dust particles in Earth's upper atmosphere are often electrically charged. HINT (a) Find the distance separating two dust particles (in m) if each has a charge of +e and the Coulomb force between them has ...
need help The following informations available for sharika Company for 2016: Inventories January 1 December 31 Materials $401,160$501,450 Work in process 722,090 681,970 Finished goods 694,010 697,020 Advertising expense Depreciation expense-office equipment Depreciation expense-factory ...