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How many ways can 4 baseball players and 3 basketball players be selected from 12 baseball players and 9 basketball players?
The temperature of an ideal gas remains constant while the absolute pressure changes from 100 kpa to 800 kpa. If initial volume is 100 liters, what is the final volume in liters?
The heights of the population of boys are normally distributed with a mean of 66 inches and al standard deviation of 8.9 inches. If a random sample of 40 boys is drawn from this population, what is the probability that the mean of this sample is greater than 64.5 inches?
Express each of these statements using quantifiers: a) Every student in this class has taken exactly two mathematics classes at this school.
Suppose 4.00 grams of H2 were used?how many grams of water would be produced?
Discuss the ways in which a full-page word processor is or is not a direct manipulation interface for editing a document using Schneider man's criteria. What features of a modern word processor break the metaphor of composition with pen (or typewriter) and paper?
(15)marks
How many moles are present in 24ml of 0.500m solution of sodium chloride
A sample size of 36 is to be selected from a population that has a mean of µ = 45 and standard deviation s of 10.
- Find the mean of the sampling distribution
- Find the standard error of the sampling distribution.
- What is the probability that this sample mean will be between 40 and 50?
The height of grade 1 pupils are approximately normally distributed with µ = 45 inches and s = 2.
- If an individual pupil is selected at random, what is the probability that he or she has a height of 42 and 47?
- A class of 30 of these pupils is used as a sample. What is the probability that the class mean is between 42 and 47?
- If a pupil is selected at random, what is the probability that is taller than 46 inches?
- A class of 30 of these pupils is used as sample. What is the probability that the class mean is greater than 46 inches?
Write the thermochemical equation for the following reactions that occur at constant pressure.
1. Combustion of hexane, C5H12 to carbon dioxide gas and water, releases 3923.9kJ of heat.
2. Reaction between solid phosphorus, P4 and oxygen gas, produces P3O6 and 1640.1kJ of heat.
3. One mole ammonium nitrate (NH4NO3) dissolves in water to produce aqueous ammonium ions and nitrate ions accompanied by the absorption of 28.1kJ of heat.
4. Formation of carbon dioxide gas from carbon (graphite) and oxygen yields 393.5kJ of heat.
#340153 on Dec 2023