Area under the standard normal curve
Find the area under the standard normal curve which lies between z = 0.72 and z = 1.59
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A population has a mean of 81 and standard deviation of 25. Find the mean and standard deviation of sampling distribution of a sample means with sample size 262.
In a preliminary design for a mail-sorting machine, parcels moving at 2 ft/s slide down a smooth inclined ramp and a horizontal surface with kinetic coefficient of friction μk with the parcel.
For each of the cases below, involving areas under the standard normal curve, decide whether the first area is bigger, the second area is bigger, or both areas are equal.
Air enters an ideal diffuser operating at steady state at 1 bar, -3°C and 260 m/s and exits at with a velocity of 130 m/s. Determine : the exit temperature and pressure for the air.
A hot rolled shaft is subjected to torsional load that varies from 320 Nm clock wise to 120 Nm anti -clockwise and an applied bending moment at a critical section varies from 400 Nm to 200 Nm. The shaft is of uniform cross section.
A car with mass of 200 g is carring a block of 150 g climbingan incline of 30 degrees. assume the car and the attached mass aremoving wil an initial velocity of 1.7 m/s. A student predicts thecar will travel a maximum of 42 cm. a) Is this a reason
Determine the mole fractions of polyvinyl chloride and polyvinyl acetate in a copolymer having a molecular weight of 11,000 g/mol and a degree of polymerization of 150.
The following probability distribution shows the likelihood that people were absent 0, 3, 4, 6, 8, or 11 days last month. Number of days absent Probability 0 0.51 3 0.24 4 0.13 6 0.06 8 0.06 11 0 What is the variance of the number of days absent?
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