Gayla
Popular questions and responses by Gayla
College Chemistry
Calculate temperature when 0.50L sample or gas at 1.0 atm and 25degrees C is compressed to 0.05L of gas at 5.0 atm.
asked on July 25, 2009 
Chemistry
Calculate [H3O] for a solution of hydrochloric acid that is: pH=2.00 pH=3.00
asked on April 26, 2009 
Statistics
The web based company Oh Baby! has a goal of processing 95% of its orders on the same day they are received. If 485 out of the next 500 orders are processed on the same day, would this prove that they are exceeding their goal, using a = .025?
asked on June 8, 2008 
Statistics
A coin was flipped 60 times and came up heads 38 times. (a)at the .10 level of significance, is the coin biased towards heads? Show your decision rule and calculations. (b) calculate a pvalue and interpret it.
asked on June 8, 2008 
College Chemistry
Calculate both [H30] and [OH] for a solution that is: pH=5.50 ph=7.00
asked on April 26, 2009 
mathStatistics
I need help with the following questions and appreciate any and all help given. 1. Faced with rising fax costs, a firm issued a guideline that transmissions of 10 pages or more should be sent by a 2day mail instead. Exceptions are allowed, but they want
asked on June 8, 2008 
statistics
Can people really identify their favorite brand of cola? At a= .05, is the correctness of the prediction different for the two types of cola drinkers? Since it is 2 x 2 table, try also a twotailes twosample z test for n1 = n^2 and verify that z2 is the
asked on June 23, 2008 
statistics
Sixtyfour students in an introductory college economics class were askd how many credits they had earned in college, and how certain they were about their choice of major. At a = .01, is the degree of certainty independent of credits earned? Credits Very
asked on June 23, 2008 
statistics
A student team examined parked cars in four different suburban shopping malls. 100 vehicles were examined in each location. At a = .05, does vehicle type vary by mall location? Vehicles Vehicle Somer Oakland Great James Row Type set Lakes town Total Car 44
asked on June 23, 2008 
Probability problems
I need help with two word problems that have to do with probability. Can someone please help me?
asked on May 21, 2008 
statistics
Hearing levels or cockpit noise in an aircraft can damage the hearing of pilots who are exposed to this hazard for many hours. Noise level is described as Low=under 88 decibels, Medium=8891 decibels, High=92^decibels. At a = .05, is the cockpit noise
asked on June 23, 2008 
chemistry
The hydornium ion concentration in blood of three different patiens was: Patient [H30+] A 5.0 X 10^8 B 3.1 X 10^8 C 3.2 X 10^8 What is the pH of each patient's blood? If the normal range is 7.307.50, which, if any, of these patient's have an abnormal
asked on April 26, 2009 
Statistics
An auditor reviewed 25 oral surgery insurance claims from a particular surgical office, determining that the mean outofpocker patient billing above the reimbursed amount was $275.66 with a standard deviation of $78.11. (a)at the 5% level of significance,
asked on June 8, 2008 
Math
P1V1/T1=P2V2/T2 combined gas law 1.0atm*0.50L/298K=5.0atm*0.50L/T2 Can you help me to go from this step to the solution?
asked on July 26, 2009 
College Chemistry
How many pounds of propane,C3H8, if you pay $20 for a 15L cylinder, filled to 150 psi at 25 degrees C.
asked on July 25, 2009 
College Chemistry
The previous questions that I submitted are still unclear to me as a plug and chug approach does not help me at all. Can you please explain better?
asked on April 26, 2009 
Math
Solve 12 / 3 * [8 + (14)2 – 6] + 2 =
asked on September 19, 2015 
College Algebra
An amount of $500 was invested in 1970 and the investment grew as shown in the following table. The average rate of change of the investment between 1975 and 1980 is ___ per year. Year 1970 1975 1980 1985 Capital 500 966 1856 3578
asked on January 29, 2009 
MATH
WHAT IS THE VARIANCE OF 32, 41, 25, 62, 71, 35, 37, 53, 44, 29
asked on December 17, 2017

mathStatistics
Thanks for explaining the problem in terms that I can understand.
posted on June 11, 2008 
mathStatistics
Thanks for all of your help.
posted on June 11, 2008 
Statistics
Thank you for your help.
posted on June 11, 2008 
Statistics
Thank you for your help.
posted on June 11, 2008 
Statistics
Thank you so very much for your help.
posted on June 9, 2008 
Probability problems
Thank you so very much for helping me with the two problems. I can now finish the rest of my homework. Take care and thanks for helping me and other students like me.
posted on May 21, 2008 
Probability problems
Thank you and here is the two problems. 1. A certain airplane has two independent alternators to provide electrical power. The probability that a certain given alternator will fail on a 1hour flight is .02. What is the probability that (a)both will fail?
posted on May 21, 2008