Question: 2. Data from two samples gave the following results: sample 1 sample 2 n Y s 6 40 4.3 12 50 5.7 a) Compute the

2. Data from two samples gave the following results: sample 1 sample 2 n Y s 6 40 4.3 12 50 5.7 a) Compute the unpooled SE of b) Compute the pooled SE of 3. In a study of the nutritional requirements of cattle, researchers measured the weight gains of cows during a 78-day period. For two breeds of cows, Hereford(HH) and Brown Swiss/Hereford(SH), the results are summarized in the following table. (Note, the precise df is 71.9). HH SH n Y s 33 18.3 17.8 51 13.9 19.1 Use a t test to compare the means. Use =0.1. a) Define Ho/Ha b) Find test statistics c) Estimate p-value d) State conclusion e) List the conditions for the test (for example, should the two samples be normally distributed? Should HH data and SH data be independent?)

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