Scores are normally distributed with mean
Suppose that z scores are normally distributed with mean of 0 and standard deviation of 1.
If P(0 < z < a) = 0.3907, find a.
If P(-b < z < b) = 0.8664, find b.
If P(z > c) = 0.0643, find c.
If P(z > d) = 0.9922, find d.
If P(z < e) = 0.4500, find e.
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Two production lines are employed to pack sugar in 5 kg bags. Line 1 produces twice as many bags as does line 2. The probability that bag comes from line 1 and is defective is1/150. The probability that the bag comes from line 2 and is defective i
Your offspring came home with the 105 on mathematics test that had national mean of 105 and a 55 on an English test that that had a national mean of 55.On which test did your offspring do better when compared to the other students in who took the
You're in charge of reducing the water consumption in a dormitory at MU and, thus, have been charged with evaluating how long it takes students to shower.
Due to financial constraints, the helmets will be designed to fit all men except those with head breadths that are in the smallest 2.5% and largest 2.5%. Find the minimum and maximum head breadths that the helmets will fit.
The mean salary of the teachers at Norman High School is $50,000 with a standard deviation of $3,000.What is the probability that a randomly selected teacher earns at least $55,000?
In a study of elite competitive milers, it was determined that the average time for the mile was 4.00 minutes with a standard deviation of 06 seconds.
In the study of 1000 two parent families, a researcher found mean height of husbands was 68 inches with a standard deviation of 2.7 inches. The mean height of the wives was 63 inches with a standard deviation of 2.5 inches.
Determine the Z scores for each of the measurements in the sample data shown below:
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