# Number of columns 1number of rows 1 b the sample size

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(number of columns - 1)(number of rows - 1) B. The sample size minus one C. The sample size plus one Answer Key:A
Question 19 of 20 1.0/ 1.0 Points The data presented in the table below resulted from an experiment in which seeds of 5 different types were planted and the number of seeds that germinated within 5 weeks after planting was recorded for each seed type. At the .01 level of significance, is the proportion of seeds that germinate dependent on the seed type? Seed Type Observed Frequencies Germinated Failed to Germinate 1 31 7 2 57 33 3 87 60 4 52 44 5 10 19
Feedback: We are running a Chi-Square Test for Independence. Copy and Paste the table into Excel. You are given the Observed Counts in the table. We need to calculate the Expected Counts . First sum up the rows and column. Then you need to find the probability of the row and then multiple it by the column total. Germinated Failed to Germinate Sum 1 31 7 38 2 57 33 90 3 87 60 147 4 52 44 96 5 10 19 29 Sum 237 163 400 Germinated Failed to Germinate
1 =237*(38/400) =163*(38/400) 2 =237*(90/400) =163*(90/400) 3 =237*(147/400) =163*(147/400) 4 =237*(96/400) =163*(96/400) 5 =237*(29/400) =163*(29/400) Now that we calculated the Expected Count we can use Excel to find the p-value. Use =CHISQ.TEST(highlight actual counts, highlight expected counts) = 0.00205 p-value = 0.00205 < .01, Reject Ho. Yes, the proportion of seeds that germinate dependent on the seed type. Question 20 of 20 0.0/ 1.0 Points Click to see additional instructions Staples, a chain of large office supply stores, sells a line of desktop and laptop computers. Company executives want to know whether the demands for these two types of computers are dependent on one another. Each day's demand for each type of computers is categorized as Low, Medium-Low, Medium-High, or High. The data shown in the table below is based on 205 days of operation. Based on these data, can ? Test at the 5% level of significance. desktops low med-low med-high high low 4 15 14 3 36 laptops med-low 6 18 18 23 65 med-high 13 17 10 17 57 high 7 15 15 10 47 30 65 57 53 205 What is the test value for this hypothesis test?
What is the critical value for this hypothesis test?
What is the conclusion for this hypothesis test? Choose one. 1. At the .05 level of significance, Staples can conclude that demands for these two types of computers are independent.