researcher ran a simple regression analysis with the two variables Altitude and Temperature in SPSS and came up with the fitted model

INSTRUCTIONS TO CANDIDATES

ANSWER ALL QUESTIONS

32. A researcher ran a simple regression analysis with the two variables (Altitude and Temperature) in SPSS and came up with the fitted model yA = 20.56 — 1.6x that can be used to predict temperature. If when the altitude is 0, the temperature is 20.56°C, what will be the temperature when the Altitude decreases by 160m?

Ans:______

a. -235.44°C b. 276.56°C C. -276.56°C d. 235.44°C

Ciara, an ornithologist, has 4 bird feeders at separate locations. She wonders if birds are equally likely to visit each of the feeders. She recorded data for a sample of 350 recent visits in the table below. Ciara wants to perform a X2 goodness-of-fit test to determine if these results suggest that birds visit one specific feeder more  often than the other feeders. Use this information to answer questions 33 and 35

Feeder #1 #2 # #4

Observed visits 80 90 92 88

33. What is the degrees of freedom for the test? Ans:__

a.4 b.3 c.2 d.1

34. What is the expected value of Feeder #2?

a. 87.5 b. 90 c. 116.6 d. 175

35. What is the calculated value of X2 ? Ans:

a. X2 = 0.9 b. X2 = 1.2 c. X2 = 29.8 d. X2 = 175.4

36. What is the non-parametric test for the independent sample t-test? Ans:_______

a. Mann-Whitney U b. Kruskal-Wallis C. Spearman d. Wilcoxon rank sum

37. Statistical estimate can be classified as point and _____ estimation. Ans:

a. Correlation b. Line c. Sample d. Interval

38. The probability distribution of a sample statistic is called? Ans:_______

a. Sampling distributîon b. Probability distribution c. Statistic distribution d. Unbiased estimator

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