Question

In this problem, assume that the distribution of differences approximately normal Notes For degrees of freedom dl. not in the Student's situations, this choice of I may increase the value by a mall amount and therefore produce a slightly more conservative answer table, use the desest of that is smaller. In some The artifact frequency for an excavation of a kiva in Bandelier National Monument gave the following information Stratum Flaked Stone Tools Nonfiaked Stone Tools Does this information indicate that there tend to be more (a) What is the level of significance? tools than nonflaked stone tools at this e ration site? Use a level of significance et de faked - nonaked.) State the null and alternate hypotheses. We you use a left-tailed, night-caled, or two-tailed Hy: H-0; H > 0, right-tailed Mol Mo 0; ME 0; left-tailed H Ho Ho > 0, N Ho: Mo = 0; 0; right-tailed 0; two-tailed (0) What sampling distribution will you use? What assumptions are you making? The standard normal. We assume that has an approximately normal distribution The Student'st. We assume that has an approximately normal distribution The standard normal. We assume that has an approximately uniform distribution The Student'st. We assume that has an approximately uniform distribution

Answer 1

The statistical software output for this problem is:

Paired T hypothesis test: HD 1-2 Mean of the difference between Flaked and Non- flaked Ho HD 0 HA HD 0 Hypothesis test results: Difference Mean Std. Err. DF T-Stat P-value Flaked Non-flaked 6.5 2.7320845 7 2.3791358 0.0245

Hence,

a) Level of significance = 0.05

Hypotheses: Option A is correct.

b)  Option B is correct.

Test statistic = 2.379

c) 0.005 < P - value < 0.025

Graph A is correct.

d) Option D is correct.

e) Option A is correct.