Isabel is a very determined 4th grader who studies different neighborhoods each year to determine which give the most candy on

Question

Isabel is a very determined 4th grader who studies different neighborhoods each year to determine which give the most candy on Halloween Right now she wants to know which is the most consistent in the amount of candy she receives She thinks the population standard deviation of all the neighborhoods is 3 candies In her neighborhood she samples 9 of the houses and finds a sample standard deviation of 1 94 candies At the a 0 10 significance level is there evidence to say that her neighborhood has a smaller standard deviation than 3 Use the p value method a For this study we should use Chi Squared test for a population standard deviation b The null and alternative hypotheses would be Ho o v 3 H ov c The test statistic is 2 042 d The p value 0 0842 e The p value is va f Based on this we should fail to reject g Thus the final conclusion is that 3 please show your answer to 3 decimal places Please show your answer to 4 decimal places the null hypothesis O The data suggest the populaton standard deviation is significantly less at a 0 10 so there is sufficient evidence to conclude that the standard deviation of candies is less than 3 The data suggest the population standard deviation is not less at a 0 10 so there is sufficient evidence to conclude that the standard deviation of candies is 3 O The data suggest the population standard deviation is not significantly less at a 0 10 so there is not sufficient evidence to conclude that the standard deviation of candies is less than 3 Give a short explanation of how you reached your conclusion to Reject Fail to Reject or Accept HO in the last problem

Kunduz · Accepted Answer

Click to see the answer