The height of all Christmas trees in Ohio are approximately normally distributed with a mean of 180 cm and standard deviation of 7 cm. How tall must Christmas trees in Ohio be in order to be in the tallest 5% of these trees?
The height of all Christmas trees in Ohio are approximately normally distributed with a mean of...
Suppose that height is normally distributed with a mean of 68 inches and a standard deviation of 4 inches. How many inches tall are the tallest 3% of people?
support #BLM! 7. Suppose it is known that heights of 8 year old Christmas trees are approximately normally distributed with a mean of 75.5" and standard deviation o = 8.3". a) [5 pts] What is the probability that a randomly selected tree is taller than 74”? b) [2 pts) If we sample 14 of those trees, what is the standard deviation of the distribution of sample means (ox) for this sample? c) [4 pts) If you sample 14 trees, what...
12A survey found that women's heights are normally distributed with mean 63.3 in. and standard deviation 2.3 in. The survey also found that men's heights are normally distributed with a mean 67.3 in. and standard deviation 92.9. Complete parts a through c below. The percentage of women who meet the height requirement is ____ Find the percentage of men meeting the height requirement. _____ If the height requirements are changed to exclude only the tallest 5% of men and the...
Suppose it is known that heights of 8 year old Unrisunas trees are approximately normally distributed with a mean of 75.5" and standard deviation or = 8.3". [5 pts) What is the probability that a randomly selected tree is taller than 74”? [2 pts] If we sample 14 of those trees, what is the standard deviation of the distribution of sample means for this sample? [4 pts] If you sample 14 trees, what is the probability that the mean height...
The heights of pecan trees are normally distributed with a mean of 10 feet and a standard deviation of 2 feet. Show all work. Just the answer, without supporting work, will receive no credit. (a) What is the probability that a randomly selected pecan tree is between 9 and 12 feet tall? (Round the answer to 4 decimal places) (b) Find the 80th percentile of the pecan tree height distribution. (Round the answer to 2 decimal places) (a) For a...
The heights of trees in a large grove are normally distributed with a mean of 85 feet and a standard deviation of 10 feet. Explain your answers and provide a drawing of the probability (area under the curve) for each situation. What is the probability that a tree selected at random is more 100 feet tall? What is the percentile rank of a tree that is 80 feet tall? What is the minimum height of a tree that is in...
Suppose that the diameters of oak trees are normally distributed with a mean of 4 feet and a standard deviation of 0.375 feet. Step 4 of 5: If we wanted to look at the top 15% of trees, what would their minimum diameter be? [Round to 2 decimals] Suppose that the diameters of oak trees are normally distributed with a mean of 4 feet and a standard deviation of 0.375 feet. Step 5 of 5: If we know that all...
2) Women's heights are normally distributed with a mean of 64.1 in, and a standard deviation of 2.5in. a) What percentage of adult women can fit through the doors on the Mark VI monorail (find the height of the doors on the Monorail in the chapter 5 notes)? b) Does the answer to part a mean that all women are under 6 ft tall? If not, explain the probability in a complete sentence by converting it to a fraction. c)...
The height of university students is normally distributed with a mean of 175 centimeters and a standard deviation of 8 centimeters. What is the height of the 20% of the tallest students? a) 175 cms b) 168.27 cms c) 181.73 cms d) 185.2 cms
Tree heights: Cherry trees in a certain orchard have heights that are normally distributed with mean - 114 inches and standard deviation - 14 inches. Use the TI-84 PLUS calculator to answer the following. Round the answers to at least two decimals. (a) Find the 28" percentile of the tree heights. (b) Find the 84 percentile of the tree heights. (c) Find the third quartile of the tree heights. (d) An agricultural scientist wants to study the tallest 1% of...