Normal random variable with mean
Given the length an athlete throws a hammer is a normal random variable with mean 50 feet and standard deviation 5 feet, what is the probability he throws it between 42 feet and 62 feet?
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A large balloon is initially filled to a volume of 25.0 L at 353 K and a pressure of 2575 mm Hg. What volume of gas will the balloon contain at 1.35 atm and 253 K?
What is the tension in the string? What is the force causing the centripetal acceleration of the puck? What is the speed of the puck?
You may assume a mean atmospheric temperature of 247 K for this equation. Determine the design thrust for a throat area of 0.1 m2. Assume that k = 1.4 and MW = 20.
Determine the change in boiling point for 300.0 g of carbon disulfide (Kb= 2.34 degrees C kg/mol) if 35.0 g of a nonvolatile, nonionizing compound is dissolved in it.
A 4.0 ohm resistor, an 8.0 ohm resistor, and a 12 ohm resistor are connected in series with a 24 v battery. What are (a) the equivalent resistance and (b) the current in each resistor?
A good rule of thumb is to use relativistic equations whenver the kinetic energies determined classically and relativistically differ by more than 1%. Find the speeds when this occurs for (a) electrons, and (b) protons.
Copper is added to silver to make the metal stronger and more durable. A small sterling spoon has a mass of 100 g. Calculate the number of copper and silver atoms in the spoon.
A student spots an unknown sample on a TLC plate. After developing in hexanes/ ethyl acetate 50:50, he/she saw a single spot with an Rf of 0.55. Does this indicate that the unknown material is a pure compound?
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Problem: Compare independent variables, dependent variables, and extraneous variables.
Introduce the instrument you're focusing on. Provide some background information about it and state why it's important in psychological assessment.
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When a counselor asks a client to pretend to interview for a job, and the counselor pretends to be an employer,
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