What is the standard deviation of a binomial distribution with 50 trials and p = 0.4?
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What is the standard deviation of a
binomial distribution with 50 trials
and p = 0.4?
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- The annual per capita consumption of oranges (in pounds) in the United States can be approximated by a normal distribution. The mean annual per capita consumption of oranges (in pounds) is 19.2 with a standard deviation of 4 pounds. What annual per capita consumption of oranges represents the 5th percentile? What annual per capita consumption of oranges represents the third quartile? • The time spent (in days) waiting for a heart transplant in Ohio and Michigan for patients with A+ blood can be approximated by a normal distribution with a mean waiting time of 127 days and a standard deviation of 23.5 days. What is the minimum time spent waiting for a heart that would place a patient in the top 30% of waiting times? In a certain year, the nationwide SAT verbal score averaged 430 with a standard deviatioh of 96. Assuming a normal distribution and continuous scores over the scale, between what two values would you expect to find the middle 90% of SAT verbal scores in the year noted?…Heights of 2-year-old boys are normally distributed with mean of 28 inches and a standard deviation of 2.4. What is the chance a 2 year old boy is less than 26 inches tall? What is the chance a 2 year old boy is more than 20 inches tall?What is the value of the F-statistic if one sample has a standard deviation of 0.00436 and another sample has a standard deviation of 0.0057?
- The mean of the commute time to work for a resident of a certain city is 27.3 minutes. Assume that the standard deviation of the commute time is 7.1 minutes. What minimum percentage of commuters in the city has a commute time within 2.5 standard deviations of the mean? What are the commute times within 2.5 standard deviations of the mean?Suppose that shoe sizes of American women have a bell-shaped distribution with a mean of 8.168.16 and a standard deviation of 1.511.51. Using the empirical rule, what percentage of American women have shoe sizes that are less than 9.679.67? Please do not round your answer.What is the verbal SAT score such that only 16% of admitted students had a higher score? Mean=660 Standard Deviation = 40
- The weight of male babies less than 2 months old in the United States is normally distributed with mean 12.1 poundsand standard deviation 5.3. how are they working the problem to get 0.8224?If a distribution is normal with mean=60 and standard deviation=15 what is the z score of 40?what is the minimum pregnancy length that can be in the top 8% of pregnancy given a mean of 265 and a standard deviation of 12
- Adult men have heights with a mean of 69.0 inches and a standard deviation of 2.8 inches. Find the height of a man with a z-score of -1.3214Suppose that shoe sizes of American women have a bell-shaped distribution with a mean of 8.068.06 and a standard deviation of 1.521.52. Using the empirical rule, what percentage of American women have shoe sizes that are at least 9.589.58?The blood platelet counts of a group of women have a bell-shaped distribution with a mean of 253.8 and a standard deviation of 61.7. What is the approximate percentage of women with platelet counts between 192.1 and 315.5?
