Assume that the distribution of weights of adult men in the United States is normal with mean 190 pounds and standard deviation 30 pounds. The weight of a randomly selected adult male in the United States marks the start of the 40th percentile. How much does he weigh? Enter a number rounded to two decimal places, e. g. 165.12 not 165.12876. Do not enter the units.

182.41

Step-by-step explanation:

Problems of normally distributed samples are solved using the z-score formula.

In a set with mean and standard deviation , the zscore of a measure X is given by:

The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the pvalue, we get the probability that the value of the measure is greater than X.

In this problem, we have that:

40th percentile

Value of X when Z has a pvalue of 0.4. So X when Z = -0.253.

So the answer is 182.41.

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step-by-step explanation:

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answer: yard ramps with a level off platform are typically 36 feet long. truck, rather than at an angle, enabling access to those pallets at the very back of the truck. if you are using your yard ramp to convert a loading dock into a drive-in door, we even at 60 inches (5 feet) high and a 30 foot ramp, the slope of the ramp will be less

step-by-step explanation: