Determine the income level
The average family income in the town of Seneville is $45 000, with a standard deviation of $9000. Assuming that family income is normally distributed, determine the income level below which 80% of the families in this town earn.
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Sulfur 2.56g is burned at a constant volume calorimeter with excessO2 gas. The temperature increases from 21.25C to 26.72C. Thebomb has a heat capacity of 923J/K and the calorimeter contains 815grams of water.
A 100 Ω resistor is connected to the battery. Determine the voltage applied to the resistor.
In a simple linear regression based on 30 observations, the following information is provided: y=-6.92+1.35x and se=2.78. Also, se(y0) evaluated at x=30 is 1.02. Construct a 95% prediction interval for y if x equals 30.
The following reaction takes place in a sealed 5.0 L flaskheld at 450 K. If both reactants begin at partial pressuresof 5.0 atm, what will the final partial pressure of CO2 be assuming that the reaction goes to completion?
Assume that the aluminum wire has a rectangular cross section. The resistivity of aluminum is 2.82 x 10-8Ω-m
The clearance between the members is 14 in. Determine the required length L of each splice if a factor of safety of 2.75 is to be achieved.
Auto glass companies now have a machine that can repair broken windshields with a success rate of 85%. If a random sample of six cars is taken from the customer Records, determine the probability that:
Consider the normal freezing point of water. What are the signs(positive or negative) of ΔS and ΔH for the freezing of liquid water to form iceand what is the ratio of ΔH/ΔS at standard pressure? Now, consider the normal bo
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