A nicotine contents of a certain brand of cigarette shows that on the average one cigarette contains 1.52 milligrams of nicotine with a standard deviation of 0.07 milligram. According to Tchebysfeff’s Theorem, between what values must the nicotine content be for at least 96% of all cigarettes of this brand?

Suppose that the blood pressure of the human inhabitants of a certain Pacific island is distributed with mean, u = 109 mmHg and standard deviation , o = 13 mmHg. According to Chebyshev's Theorem, at least what percentage of the islander's have blood pressure in the range from 85.6 mmHg to 132.4 mmHg ? answer:

Suppose that the antenna lengths of woodlice are approximately normally distributed with a mean of 0.25 inches and a standard deviation of 0.05 inches. What proportion of woodlice have antenna lengths that are at least 0.18 inches? Round your answer to at least four decimal places.

Suppose babies born after a gestation period of 32 to 35 weeks have a mean weight of 2500 grams and a standard deviation of 800 grams while babies born after a gestation period of 40 weeks have a mean weight of 3000 grams and a standard deviation of 385 grams. If a 32​-week gestation period baby weighs 2650 grams and a 41​-week gestation period baby weighs 3150 ​grams, find the corresponding​ z-scores. Which baby weighs more relative to the gestation​ period? Find the corresponding​ z-scores. Which baby weighs relatively more​? Select the correct choice below and fill in the answer boxes to complete your choice. ​(Round to two decimal places as​ needed.)   A. The baby born in week 41 weighs relatively more since its​ z-score, nothing​, is smaller than the​ z-score of nothing for the baby born in week 32.   B. The baby born in week 32 weighs relatively more since its​ z-score, nothing​, is smaller than the​ z-score of nothing for the baby born in week 41.   C. The…

The population of weights of a particular fruit is normally distributed, with a mean of 248 grams and a standard deviation of 26 grams. If 11 fruits are picked at random, then 3% of the time,  their mean weight will be greater than how many grams? Round to the nearest gram.

Use z scores to compare the given values. The tallest living man at one time had a height of 238 cm. The shortest living man at that time had a height of 142.4 cm. Heights of men at that time had a mean of 175.45 cm and a standard deviation of 5.59 cm. Which of these two men had the height that was more extreme? ... Since the z score for the tallest man is z = 0 and the z score for the shortest man is z = the man had the height that was Im- more extreme. (Round to two decimal places.) shortest tallest

claim the standard deviation of pulse rates in adult women is at least 50. for a random sample of adult females the pulse rates have a standard deviation of 11.6.

For a population with a population mean = 60 and a population standard deviation = 9, find the score (X value) that corresponds to each of the following z - scores. A. z-= -1.00 B. z- =+0.70