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
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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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