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Each day hundreds of deliveries are scheduled. The manager decides to monitor the time deviations by taking a random sample of 16 deliveries and calculating the average deviation defined by D = 1/16 Di i=1 16 ∑ for each day. Assume that historical data such as that displayed in part (1) suggests that the distribution of deviations Di have a mean of 27 minutes and a standard deviation of 20 minutes. Find the probability that the sample mean is less than 15 minutes. (i.e. Find P[ D < 15] for a sample of size n=16)
ThePb2+concentration in a saturated solution oflead bromideis measured and found to be1.18×10-2M. Use this information to calculate a Ksp value forlead bromide.
an automobile gasoline tank holds 47 kg of gasoline. when the gasoline burns 165 kg of oxygen are consumed and carbon
a hybrid electric vehicle, has an EPA gas mileage of 52 mi/gal in the city. How many kilometers can the Prius travel on 15 liters of gasoline?
The repeating galacturonic acid monomers are connected by a-(1->4) bonds. Below draw 4 repeating monomer units making up a pectin molecule
1 mole of a hydrocarbon of formula CnH2n was burned completely in oxygen producing carbon dioxide and water vapour only. It required 192 g of oxygen. Work out the formula of the hydrocarbon.
In the second paragraph, analyze the effects the national debt has on our economy. Your reasons must be logical and detailed and must support.
What volume (L) of H2 at 745 torr and 20.oC can be prepared from 4.8 g of water? (Atomic weights: Fe = 55.85, O = 16.00, H = 1.008; 1 atm = 760 torr).
Can any one explain that how mircrowave can heat the food that contains water though mircrowave carrys a little energy
A reaction is stereoselective when one stereoisomer is formed more than another.
You are given 100g agarose (which makes a gel when dissovled in boiling water) and 100 ml buffer. Show how you would prepare 50 ml of a 1.2% agarose gel. weight and volume do not add up
Problem- Sort the smaller peptides according to whether they are- likely to form or if they will not form at all during this process.
Explain the solubility of KNO3 is 155 g per 100 g of water at 75 degree Celsius, and 38.0 g at 25 degree Celsius. Explain what mass (in grams) ofKNO3 will crystallize out of solution if exactly 100 g of its saturated solution at 75 degree Celsius ..
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