A comparison between species: Biologists comparing the gestation period of two newly discovered speciesof frog collected data from 15 frogs of species A and 23 frogs of species B. Species A exhibited an averagegestation period of 11 days with a standard deviation of 3.6 days while species B had a gestation period of15 days and a standard deviation of 3.6 days. The researchers want to know whether the average lengths ofthe gestational periods differ between the two species. Conduct a hypothesis test at a significance level ofa = 0.1.a) The hypotheses for this test are:O Ho: H8 = 11Hạ: HB = 11O Họ: HA - Hs = 0Ha: HA - HB < 0O Ho: HA - Hs = 0Hạ: HA - HB = 0O Hg: HA - H3 = 0Hạ: HA - HB > 0What is the test statistic for this test?test statistic =(Report answer accurate to 2 decimal places.)What is the p-value for this test?p-value =(Report answer accurate to 4 decimal places.)The decision reached isO Fail to reject HoO Reject Ho and accept HaAs such, the final conclusion is thatO There is significant evidence to suggest a difference between the lengths of the two species'gestational periodsO The lengths of the gestational periods are the same.O There is significant evidence that suggests no difference in the lengths of the gestational periods.O There is not significant evidence to suggest a difference between the lengths of the two species'gestational periods

The provided information is For Ax¯1=11s1=3.6x¯2=15s2=3.6n1=15n2=23α=0.10 a. The null and…

Answered: comparison betw species: Biologists…

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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Animals of a given weight are operated on in a veterinary hospital. The dose of anesthetic A (in mg) required to render animals suitably unconscious for the operation is normally distributed with mean 120 and standard deviation 20. The lethal dose L (in mg) of the same anesthetic for these animals is also normally distributed, with mean 350 and standard deviation 50. (Help on part a and b) a. Find a dose "D" that the vet should administer, in order that 99.9% of animals will be suitably unconscious for the operation. b. If the dose "D" that you found in part a is administered, what percentage of animals die?
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A custodian wishes to compare two competing floor waxes to decide which one is best. He believes that the mean of WaxWin is greater than the mean of WaxCo. In a random sample of 40 floors of WaxWin and 43 of WaxCo. WaxWin had a mean lifetime of 26.3 and WaxCo had a mean lifetime of 28. The population standard deviation for WaxWin is assumed to be 7.1 and the population standard deviation for WaxCo is assumed to be 6.1. Perform a hypothesis test using a significance level of 0.05 to help him decide. Let WaxWin be sample 1 and WaxCo be sample 2. The correct hypotheses are: O Ho: µ1 H2(claim) Ο H: μι μp HA: H1 < µ2(claim) O Ho: µ1 = 2 HA: μι μ (claim) Since the level of significance is 0.05 the critical value is 1.645 The test statistic is: (round to 3 places) The p-value is: (round to 3 places) The decision can be made to: O reject Ho O do not reject Ho The final conclusion is that: O There is enough evidence to reject the claim that the mean of WaxWin is greater than the mean of WaxCo.…
A custodian wishes to compare two competing floor waxes to decide which one is best. He believes that the mean of WaxWin is not equal to the mean of WaxCo.In a random sample of 49 floors of WaxWin and 35 of WaxCo. WaxWin had a mean lifetime of 25.3 and WaxCo had a mean lifetime of 27.3.The population standard deviation for WaxWin is assumed to be 7.8 and the population standard deviation for WaxCo is assumed to be 10.2.Perform a hypothesis test using a significance level of 0.05 to help him decide.Let WaxWin be sample 1 and WaxCo be sample 2.
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Chapter Exerclse 6-84 (Algo) The Rejuvo Corp. manufactures granite countertop cleaner and polish. Quarterly sales Qis a random variable with a mean of 24,320 bottles and a standard deviation of 3,130 bottles. Variable cost is $13 per unit, and fixed cost is $220,270. (a) Find the mean and standard deviation of Rejuvo's total cost. Mean Standard deviation (b-1) If all bottles are sold, what would the selling price have to be to break even, on average? (Round your answer to 2 declmal places.) Selling price (b-2) If all bottles are sold, what would the selling price have to be to make a profit of $25,695? (Round your answer to 2 declmel places.) Selling price < Prev 2
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A researcher is interested in examining the difference in the average egg incubation temperature of two lizards in North Carolina, the native green anoles versus the invasive brown anoles. To investigate this, she takes two random samples from both of the lizard populations and calculates the average egg incubation temperature, standard deviation, and sample size for each of the two samples. The average incubation temperature for the 25 sampled brown anoles is 83.2 degrees Fahrenheit, with a sample standard deviation of 20.2 degrees Fahrenheit. The average incubation temperature the 28 samples green anoles is 80.1 degrees Fahrenheit, with a sample standard deviation of 17.4 degrees Fahrenheit. She has also determined that the two samples do not exhibit strong skewness and appear approximately normal. Determine the standard error for the 99% confidence interval for the difference between the true mean incubation temperatures for the two different anole species, μ1−μ2. Give your…

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