Mean salary of the teachers
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?
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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.
Suppose that z scores are normally distributed with mean of 0 and standard deviation of 1.
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:
Calculate the percentage of the normal curve located at or above each of the following z values.
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