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Given population 15, 12, 6, 9, and 17. Suppose samples of size 3 are drawn from this population. Complete the table and draw the sketch of histogram. Describe the distribution
In particularly community,it is claimed that the mean household water usage for a particular month is 48 cubic meters. The following year,a country wide water conservation campaign was conducted.Forty five homes were randomly selected and found that the mean comsumption is 52 cubic meters with a standard deviation of 4 cubic meters.Is there enough evidence to say that the mean household water usage per month is higher than 48 cubic meters at a=0.01?
A rock is thrown horizontally from a height of 88 m high with a horizontal speed of 25 m/s. WHAT IS THE FORMULA TO BE USED IN finding time?
Write the thermochemical equation for the following reactions that occur at constant temperature:
a) Decomposition of mercuric oxide, HgO, to mercury and oxygen gas, requires 87.1 kJ of heat
b) Combustion of hexane, C6H12, to carbon dioxide gas and water, releases 3923.9 kJ of heat
Find ΔΕ
a) When 175 kJ of work is done on a system that evolves 50 J of heat to the surroundings
b) When a gas absorbs 28 kJ and has 13 kJ of work done on it
B. Consider the following reaction in a container with a movable piston:
A(I) + B(I) = C(g)
The ΔE for this reaction is 760 J. As the piston moves up, the system absorbs 839J of heat from its surroundings.
1. Is work done on the system?
2. How much work?
The demand and supply function of a good are given by
P = -3Qd +100
P =2Qs +50
Where p, Qd and Qs denotes the price, quantity demanded and quantity supplied respectively.
Calculate the equilibrium price and quantity.
Write the thermochemical equation for the following reactions that occur at constant pressure:
a.Decomposition of mercuric oxide, HgO, to mercury and oxygen gas, requires 87.1 kJ of heat
b.Combustion of hexane, C6H12, to carbon dioxide gas and water releases 3923.9 kJ of heat
Find the formula charge of each atom in the given compounds/polyatomic
ion.
1. HBr
2. N 2 O
3. SO 4 2-
An academic organization claimed that Grade 11 students study time is at most 200 minutes per day, on average. Another survey was conducted to find whether the claim is true. The group took a random sample of 30 students and found a mean study time of 240 minutes with standard deviation of 100 minutes.
Answer the following:
Parameter:
Claim:
Claim ( in symbol ):
Ho: Ho:
Ha: Ha:
What is the significance level or a?
Is it two-tailed or one-tailed test?
#340153 on Dec 2023