Question

question 25 (a-f)
Chapter 8, lecture 11 For the following questions, use this hypothetical scenario: is hypothetical scenario: 991, S . 3. M53 A biologist wants to estimate the number of white rhinos still alive in the wild. The natural habitat of the white rhino is too large to survey, so he divides the entire habitat into 100 units and randomly selects 10 of them to observe. After spending 1 day in each of these 10 units, he observes an average of M = 3 rhinos per unit of habitat, with a standard deviation of 1.3 rhinos. If the 10 units of habitat he observed are representative of the entire rhino habitat, he deduces that there must be M 100 white rhinos left in the world. 3.700 E 200 24. What is the biologist's best guess for the number of rhinos left in the world? 25. He knows that he would've observed a different average number of rhinos if he would've observed a different set of 10 habitat units. Thus, he wants to estimate the likely range of white Rhinos still alive in the world. Using a confidence level of 95% (a of .05), a. How many standard errors above the mean is the upper bound of his confidence interval? b. How many standard errors below the mean is the lower bound of his confidence interval? c. How many rhinos would he predict to be one standard error above his predicted mean number of rhinos? d. How many rhinos would he predict to be one standard error below his predicted mean number of rhinos? e. What is the margin of error in his estimate for the average number of rhinos per unit of habitat? e. What is the 95% confidence interval for the average number of rhinos one would expect to observe in any unit of habitat? f. What is the 95% confidence interval for the number of rhinos left living on the planet? SEMI = 1.

Answer 1

Cven Mlo0 n0 M 3 1.3 The bioleut's lout us for th numbe shinos lf m thu wrdd 3x 100 300. 25 Jh tomdard M aber th maan ahidh ths bound uPpur E1.3 0.411 Sha tandad sthe ower man which amor A ulo th bound ciden ntial in 3 no 04111 Jhu numbur hinos tha would be prdict be on Arandad errer to abere ha prediad muam numbur shino 3.411) numbu hins hal unl be prdt to h predited be elow m tandaid muom eray numbur shinos m-s 3-0.4 l12.5&89 margn amr me trstimat th aver numbu Yhines habital P anit ,10- 2.68 x0.4 .10 The T5, enhdon mvto th nun ohinos し* Ling m th plant i M ME 21.10 i, 40)