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1. True or False, Justify for full credit-
(a) If the variance of a data set is zero, then all the observations in this data set are zero.
(b) If P(A) = 0.4 , P(B) = 0.5, and A and B are disjoint, then P(A AND B) = 0.9.
a. Assume X follows a continuous distribution which is symmetric about 0. If P(X > 2) = 0.3, then P(X < -3) ≤0.3.
b. A 95% confidence interval is wider than a 90% confidence interval of the same parameter.
c. In a right-tailed test, the value of the test statistic is 1.5. If we know the test statistic follows a Student's t-distribution with P(T < 1.5) = 0.96, then we fail to reject the null hypothesis at 0.05 level of significance.
The volume of a larger prism is 128 cubic cm. If the prisms are similar with linear ratio of 4:3, what is the volume of the smaller prism?
An employee receives a weekly salary of $290 and a 4% commission on all sales.
The following data represent the length (in months) of time it takes for a tumor to reoccur after chemotherapy. Use five classes to determine the class width.
Find all the complex cube roots of w= 8(cos 150 + i sin 150). Write the roots in polar form with theta in degrees.
question you are given two points on a circle. is it possible to find an equation of the circle? is it possible if you
bendix fertilizer company has two plants-one in la and the other in atlanta. recent customer complaints suggest that
Compute the work required to compress a spring 2 more cm when it is already compressed 3 cm, assuming that the spring constant is k = 150 kg/s2.
What is the probability that a freshman selected at random from this group is enrolled in an economics and/or a mathematics course.
Statistics or Probability re Jukebox Scenario, On a Jukebox with 2000 songs, what is the probability that a single song will play during a 1 hour period, a 3 hour period
A grind stone starts from rest and has a constant angular acceleration of 4.0 rad/sec2. Find the angular displacement and angular velocity, after 4 sec.
during the first part of a trip, a canoeist travels 100 miles at a certain speed. the canoeist travels 25 miles on the second part of the trip at a speed of 5 mph slower. the total time for the trip is 4 hrs. what was the speed on each part of the..
if a union b of z
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