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A manufacturer of bicycle tires has developed a new design which he claims has an average lifespan
of 15 years with standard deviation of 2 years. A dealer of the product claims that the average lifespan
of 150 samples of the tires is only 4 years. Test the significant difference of the population and
sample means.
Which graph represents the parametric equations x = 3t and y = t3 – 1, where –2 ≤ t ≤ 3?
An expirement study was conducted by a researcher to determine if a new time slot has an effect on
the performance of pupils in Mathematics. Forty randomly selected learners participated in the study.
Toward the end of the investigations, a standardized assessment was conducted. The sample mean
was 78 and the standard devation of 13. In the standardization of the test, the mean was 63 and the
standard deviation was 6. Use 5% level of significance.
Reaction between solid phosphorous, P4 and oxygen gas, produces P3O5 and 1640.1kJ of heat.
1. Write a list of book defining parameters. (5 at least)
o Name (String) – Topic (String) – Pages (int) – IsEnglishLanguage (bool) – Price
(float). 2.Declare and initialize the variables of book parameters. 3.Take input from user and output all parameters given by the user. 4.Create a Function to analyze book parameter taken from user.
Consider following class Certification with following data members Id (int), name (String) ,hours(int),level (String),costPerHr (double). Provide a class StudentCertification that extends Certification. This class has an additional data member rebate (double). Override the calculateFee method so that the total cost is calculated by getting the total for the training hours @costPerHr and applying the rebate (%). E.g. if the costPerHr is 200 and 50 hours training and 0.2 rebate then the calculateFee should return 10000 – 0.2 *10000 = 8000. Provide another sub class ProfessionalCertification that extends Certification. This class no additional data member. It overrides calculateFee method so that total cost is returned as product of hours and cost per hour plus 15% tax of total hours cost. Also ProfessionalCertification implements Extendible Interface. You will also have to provide the implementation of method extend(int duration). For this you need to add the duration to training hours of the certification
i. On January 3, 2011 Gadi computer service business by investing birr 100,000 cash and equipment having birr 60,000 market value
ii. On January 6,2011 purchased office furniture on account for birr 400
iii. On January 9, 2011 purchased office furniture is purchase for birr 350 cash
iv. On January 15, 2011 paid birr 500 as partial settlement of January 3, 2009 borrowing
v. On January 21, 2011 received birr 150 from sale of old office furniture.
Required: -
ADAPT and ADOPT’S proceeds from the bank and compute recorded to discounting of note.
Write a C++ recursive function that takes an array of words and returns an array
that contains all the words capitalized
The pressure below the depth of 25 m of a homogenous fluid is 50.473 psi.
Calculate specific weight in kN/m3,density of fluid in kgm/m3 and its specific
gravity
Two spherical objects have masses of 1.5 x 105 kg and 8.5 x 102 kg. Their centers are separated by a distance of 2500 m. Find the gravitational attraction between them.
