According to a study on reptiles from decades ago the mean lifespan of giant Aldabra tortoises in the wild is 96 3 years Many of

Question

According to a study on reptiles from decades ago the mean lifespan of giant Aldabra tortoises in the wild is 96 3 years Many of the areas where these tortoises live have become polluted with plastic waste Because of this a biologist claims the mean lifespan of these tortoises has decreased To test this claim the biologist conducted a study of 22 randomly selected giant Aldabra tortoises in the wild In the study the sample mean lifespan was 95 4 years with a sample standard deviation of 12 2 years Assume that the population of lifespans of giant Aldabra tortoises in the wild is approximately normally distributed Complete the parts below to perform a hypothesis test to see if there is enough evidence at the 0 10 level of significance to support the claim that u the mean lifespan of giant Aldabra tortoises in the wild is now less than 96 3 years a State the null hypothesis Ho and the alternative hypothesis that you would use for the test Ho H D Student s t Distribution Step 1 Enter the number of degrees of freedom 0 0 0 00 00 Step 2 Select one tailed or two tailed o One tailed O Two tailed Step 3 Enter the test statistic Round to 3 decimal places IX b Perform a test and find the p value Here is some information to help you with your test Step 4 Shade the area represented by the p value 020 0 0 0 0 X x Fl 3 n The p value is the area under the curve to the left of the value of the test statistic The value of the test statistic is given by 5 0 4 0 3 0 2 0 1 20 concluded at the 0 10 Joul of clanif Espa ol 06 K

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