math
how do you Construct a 90% confidence interval for the population average time to complete the tax forms.
math
Suppose that an accounting firm does a study to determine the time needed to complete one person's tax forms. It randomly surveys 100 people. The sample average is 23.8 hours. There is a known population standard deviation of 6.0 hours. The population distribution is assum...
English
I want complete one paragraph about write one paragraph of eight to twelve sentences persuading a friend to enroll in Penn Foster by describing at least three advantages of distance-education with Penn Foster compared to a traditional school education. Use the comparison-contr...
physics
If the ball is in equilibrium when the string makes a 25.9◦ angle with the vertical as indicated, what is the net charge on the ball? Answer in units of µC.
physics
a 5.1 kg bucket water is raised from a well by a rope. the acceleration of gravity is 9.81 m/s^2. if the upward acceleration of the bucket is 4.5m/s^2, find the force exerted by the rope on the bucket of water.
math
idk
biology
does the cell theory state that cell come from cells that already exist?
biology
does the cell theory state that cell come from cells that already exist?
algebra
my question is this how do you solve this equation? x=3y-1 x+2y=9 solve each system of equation by the substitution method.
Math
How can I "prove" that a negative times a negative is a positive.
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