3Let X represent the full height of a certain species of tree. Assume that X has a normal distribution with amean of 136.8 ft and a standard deviation of 8.1 ft.A tree of this type grows in my backyard, and it stands 141.7 feet tall. Find the probability that the heightof a randomly selected tree is as tall as mine or shorter.My neighbor also has a tree of this type growing in her backyard, but hers stands 149.8 feet tall. Find theprobability that the full height of a randomly selected tree is at least as tall as hers.Enter your answers as decimals accurate to 4 decimal places.Submit Question3.0EDFFB$470Fin de%FSSTGMacBook AirY&7H***8UUIJF9K

Answered: tree. Assume that has a normal…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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In this problem, assume that the distribution of differences is approximately normal. Note: For degrees of freedom d.f. not in the Student's t table, use the closest d.f. that is smaller. In some situations, this choice of d.f. may increase the P-value by a small amount and therefore produce a slightly more "conservative" answer. The artifact frequency for an excavation of a kiva in Bandelier National Monument gave the following information. Does this information indicate that there tend to be more flaked stone tools than nonflaked stone tools at this excavation site? Use a 5% level of significance. (Let d = flaked − nonflaked.) (a) What is the level of significance? (b)What is the value of the sample test statistic? (Round your answer to three decimal places.)
Assume that the readings on the thermometers are normally distributed with a mean of 0°C and a standard deviation of 1.00°C. A thermometer is randomly selected and tested. Find the probability that the reading is between 1.5°C and 1.71°C.
An automatic machine in a manufacturing process is operating properly if the lengths of an important subcomponent are normally distributed with a mean of 119 cm and a standard deviation of 5.7 cm. A. Find the probability that one selected subcomponent is longer than 121 cm. Probability = B. Find the probability that if 4 subcomponents are randomly selected, their mean length exceeds 121 cm. Probability = C. Find the probability that if 4 are randomly selected, all 4 have lengths that exceed 121 cm. Probability =
An automatic machine in a manufacturing process is operating properly if the lengths of an important subcomponent are normally distributed with a mean of 117 cm and a standard deviation of 4.9 cm. A. Find the probability that one selected subcomponent is longer than 119 cm. Probability = B. Find the probability that if 4 subcomponents are randomly selected, their mean length exceeds 119 cm. Probability = C. Find the probability that if 4 are randomly selected, all 4 have lengths that exceed 119 cm. Probability =
Find the mean and standard error of the mean of the sampling distribution. Then sketch a graph of the sampling distribution. The prices of photo printers on a website are normally distributed with a mean of $238 and a standard deviation of $67. Random samples of size 33 are drawn from this population and the mean of each sample is determined.
In Country A, the population mean height for 3-year-old boys is 37 inches. Suppose a random sample of 15 3-year-old boys from Country B showed a sample mean of 36.8 inches with a standard deviation of 2 inches. The boys were independently sampled. Assume that heights are Normally distributed in the population. Complete parts a through c below. -..-- a. Determine whether the population mean for Country B boys is significantly different from the Country A mean. Use a significance level of 0.05. Which of the following correctly states Ho and Hą? Ho:µ+37 O A. Ha: H= 37 Ho: µ> 37 O B. Ha: us 37 Ho: μ237 OC. Haiu 37 Ho: H = 37 Hạ: H#37 Find the test statistic. t= - 0.39 (Type an integer or decimal rounded to two decimal places as needed.) Find the p-value. p= 0.702 (Type an integer or decimal rounded to three decimal places as needed.) Reject or do not reject Ho. Choose the correct answer below. A. Do not reject Ho. There is no reason to believe that 37 in. is not the population mean at a…
find the standard deviation for: 25% of students who took an examination scored more than 73 in an examination. if the mean examination score is 63. the length of a fully grown plant has a mean of 35cm. 5% of these plants are longer than 45 cm Show all workings.
Suppose Michigan is favored by 17.5 points over Indiana. If you bet a “unit” on Indiana and Indiana loses by 17 or less, you win $10. If Indiana loses by 18 or more points, you lose $11. Note: Both Michigan and Indiana are NCAA Basketball teams. 1)Find the mean and standard deviation of your winnings on a single bet. Assume that there is a 0.5 probability that you will win your bet and a 0.5 probability that you will lose your bet.
An automatic machine in a manufacturing process is operating properly if the lengths of an important subcomponent are normally distributed with a mean of 115 cm and a standard deviation of 5.5 cm. A. Find the probability that one selected subcomponent is longer than 117 cm. Probability = B. Find the probability that if 4 subcomponents are randomly selected, their mean length exceeds 117 cm. Probability = C. Find the probability that if 4 are randomly selected, all 4 have lengths that exceed 117 cm. Probability =
Assume that adults have IQ scores that are normally distributed with a mean of u =100 and a standard deviation o = 15. Find the probability that a randomly selected adult has an IQ less than 115. Click to view page 1 of the table. Click to view page 2 of the table. The probability that a randomly selected adult has an IQ less than 115 is (Type an integer or decimal rounded to four decimal places as needed.)
Find the indicated IQ score. The graph to the nght depicts 1Q scores of aduts, and those scores are nomaly detrinded with a mean of 100 and a standard deviation of 15. Click to vinw.page Lot the.tabe. Click to view.oe 2.ot.the. atle. gg V The indicated IQ score, x, is (Round to one decimal place as needed) Enter your answer in the answer box Next that smart
Solve the problem.Assume that male Siberian huskies' weights are normally distributed with a mean of 63.6 pounds and a standard deviation of 2.5 pounds. If 90 male Siberian huskies are randomly selected, find the probability that they have a mean weight between 62.9 pounds and 64.0 pounds.

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