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2. The mathematics teacher claims that the mean IQ of Statistics students is 110 with standard deviation of 12. The mean IQ of 28 randomly selected Statistics students is 112. Test the difference of the population and sample means at 5% level of significance.
6a.A rectangular airstrip measures 34.50 m by 230 m, with the width measured more accurately than the length. Find the area (in m2), taking into account significant figures.
What is the t value of the distribution with a= 1% and n=8 under the one tailed distribution
What is Quantity Theory of Money
8.a certain car is capable of accelerating at a rate of 0.57 m/s2. How long does it take for this car to go from a speed of 30 mi/h to a speed of 40 mi/h?
s
9.A certain aircraft has a liftoff speed of 129 km/h.(a) What minimum constant acceleration does the aircraft require if it is to be airborne after a takeoff run of 234 m?
m/s2
(b) How long does it take the aircraft to become airborne?
s
10.A car accelerates uniformly from rest to a speed of 30.0 mi/h in 11.0 s.
(a) Find the distance the car travels during this time.
m
(b) Find the constant acceleration of the car.
m/s2
Solid calcium oxide decomposes into elements
11. ball is thrown vertically upward with a speed of 30.0 m/s.(a) How high does it rise?
m
(b) How long does it take to reach its highest point?
s
(c) How long does the ball take to hit the ground after it reaches its highest point?
s
(d) What is its velocity when it returns to the level from which it started?
m/s
Given z1=2<45degrees, z2=3<120degrees, z3=4<180degrees. Determine the following:
a) (z1)^2+z2/z2+z3
b) z1/z2*z3
#339914 on Dec 2023