In this problem assume that the distribution of differences is approximately normal Note For degrees of freedom d f not in the

Question

In this problem assume that the distribution of differences is approximately normal Note For degrees of freedom d f not in the Student s t table use the closest d f that is smaller In some situations this choice of d f may increase the P value by a small amount and therefore produce a slightly more conservative answer In environmental studies sex ratios are of great importance Wolf society packs and ecology have been studied extensively at different locations in the U S and foreign countries Sex ratios for eight study sites in northern Europe are shown below Location of Wolf Pack Males Winter Males Summer Finland Finland Finland Lapland Lapland Russia Russia Russia USE SALT a What is the level of significance 0 05 88 39 79 55 64 50 41 55 69 Will you use a left tailed right tailed or two tailed test Oright tailed two tailed left tailed 42 61 48 55 50 It is hypothesized that in winter loner males not present in summer packs join the pack to increase survival rate Use a 5 level of significance to test the claim that the average percentage of males in a wolf pack is higher in winter Let d winter summer 50 45 State the null and alternate hypotheses Enter for as needed Ho H b What sampling distribution will you use What assumptions are you making We ll use the Student s t We assume that d has an approximately uniform distribution O We ll use the Student s t We assume that d has an approximately normal distribution We ll use the standard normal We assume that d has an approximately uniform distribution We ll use the standard normal We assume that d has an approximately normal distribution What is the t value of the sample test statistic Round your answer to two decimal places

Kunduz · Accepted Answer

Click to see the answer