A comparison between species: Biologists comparing the gestation period of two newly discovered species of frog collected data from 13 frogs of species A and 23 frogs of species B. Species A exhibited an average gestation period of 10 days with a standard deviation of 3.6 days while species B had a gestation period of 16 days and a standard deviation of 4 days. The researchers want to know whether the average lengths of the gestational periods differ between the two species. Conduct a hypothesis test at a significance level of a = 0.01. a) The hypotheses for this test are: Ho: HA - PB = 0 Ha: HA - HB > 0 Ho: HA - HB = 0 Ha: HA - PB < 0 %3D Ho: HB = 10 Ha: HB = 10 %3D Ho: HA - HB = 0 Ha: HA - HB = 0 What 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 %3D accurate to 4 decimal places.)

A comparison between species: Biologists comparing the gestation period of two newly discovered species of frog collected data from 13 frogs of species A and 23 frogs of species B. Species A exhibited an average gestation period of 10 days with a standard deviation of 3.6 days while species B had a gestation period of 16 days and a standard deviation of 4 days. The researchers want to know whether the average lengths of the gestational periods differ between the two species. Conduct a hypothesis test at a significance level of a = 0.01. a) The hypotheses for this test are: Ho: HA - PB = 0 Ha: HA - HB > 0 Ho: HA - HB = 0 Ha: HA - PB < 0 %3D Ho: HB = 10 Ha: HB = 10 %3D Ho: HA - HB = 0 Ha: HA - HB = 0 What 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 %3D accurate to 4 decimal places.)

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Description: A comparison between species: Biologists comparing thegestation period of two newly discovered species of frogcollected data from 13 frogs of species A and 23 frogs ofspecies B. Species A exhibited an average gestation periodof 10 days with a standa

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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A comparison between species: Biologists comparing the gestation period of two newly discovered species of frog collected data from 14 frogs of species A and 28 frogs of species B. Species A exhibited an average gestation period of 10 days with a standard deviation of 3.1 days while species B had a gestation period of 16 days and a standard deviation of 5 days. The researchers want to know whether the average lengths of the gestational periods differ between the two species. Conduct a hypothesis test at a significance level of a = 0.05.
A certain type of battery supercharger was found to take a mean of 12.3 minutes to charge a standard electric vehicle (EV) battery. A firmware update for this type of supercharger was recently released, but the update has received negative reviews from users. A researcher suspects the mean time the updated superchargers take to charge a standard EV battery is greater than 12.3 minutes. To test his claim, he chooses 21 of the updated superchargers at random and measures the time it takes each one to charge a standard EV battery. He finds that the superchargers take a sample mean of 12.9 minutes to charge a standard EV battery, with a sample standard deviation of 1.3 minutes. Assume that the population of amounts of time to charge a standard EV battery using the updated superchargers is approximately normally distributed. Complete the parts below to perform a hypothesis test to see if there is enough evidence, at the 0.05 level of significance, to support the claim that u, the mean time…
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A comparison between species: Biologists comparing the gestation period of two newly discovered species of frog collected data from 11 frogs of species A and 22 frogs of species B. Species A exhibited an average gestation period of 13 days with a standard deviation of 3.6 days while species B had a gestation period of 19 days and a standard deviation of 4.4 days. The researchers want to know whether the average lengths of the gestational periods differ between the two species. Conduct a hypothesis test at a significance level of a = 0.01. a) The hypotheses for this test are: O Họ: HA - PB = 0 Ha: HA - HB 0 O Họ: HB = 13 Ha: Hg = 13 O Họ: HA - HB = 0 Hạ: HA - PB = 0 What 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 is O Fail to reject Ho O Reject Ho and accept Ha As such, the final conclusion is that O There is…
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A sample of 79 female workers and another sample of 51 male workers from a state produced mean weekly earnings of $728.22 for the females and $761.88 for the males. Suppose that the population standard deviations of the weekly earnings are $ 75.84 for all females and $ 102.10 for all males. The null hypothesis is that the mean weekly earnings are the same for females and males, while the alternative hypothesis is that the mean weekly earnings for females is less than the mean weekly earnings for males. Derive the corresponding 95% confidence interval, rounded to two decimal places, for the difference between the mean weekly earnings for all female and male workers in this state. to i
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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 appropriate t∗ critical value for a 99% confidence interval for the difference between the true mean incubation temperatures for the two different anole species, μ1−μ2.…