Normal distribution and the number of observations
Assume that the data has a normal distribution and the number of observations is greater than 50. Find the critical z value used to test a Null Hypothesis where ? = 0.1 for a right-tailed test.
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Assume appropriate probability distribution for and provide logical reasoning behind your assumption.
For NH4Br dissolving in water, ΔHsoln is17kJ/mol. Write an equation that represents the solubility equilibrium for NH4Br dissolving in water. Include heat in the equation.
When the calorimeter and its contents are weighed, 1.2 g of water are found to have evaporated. What was the temperature tC?( in degrees celcius)
The decomposition of N2O into N2 andO2 is a first-order reaction. At 730C thehalf-life of the reaction is 3.58 x 103 minutes. If the initial pressure of N2O is 2.1 atm at 730C,calculate the total gas pressure after one half-life.
Suppose that a hypothesis test is to be carried out by using α = 0.04. What is the probability of committing a type I error? (Give your answer correct to two decimal places.)
Heparin was treated with dimethyl sulfate. The product was hydrolyzed under acidic conditions. Draw the structure of the reaction products. Assume that amide bond is also hydrolyzed under the reaction conditions.
The force on q1 due to q2 equals the force on q1 due to the electric field of the parallel plate capacitor. What is the distance r between the two charges?
A manufacturer knows that their items have a normally distributed lifespan, with a mean of 3.1 years, and standard deviation of 0.9 years. The 4% of items with the shortest lifespan will last less than how many years?
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