(1 point) An agricultural field trial compares the yield of two varieties of cor
ID: 3040592 • Letter: #
Question
(1 point) An agricultural field trial compares the yield of two varieties of corn. The researchers divide in half each of 18 fields of land in different locations and plant each corn variety in one half of each plot. After harvest, the yields are compared in bushels per acre at each location. The 18 differences (Variety A Variety B) give x = 1.72 and s = 3.1 . Does this sample provide evidence that Variety A had a higher yield than Variety B? (a) State the null and alternative hypotheses: (Type "mu" for the symbol , e.g. mu > 1 for the mean is greater than 1, mu 0 (b) Find the value of the test statistic. Use at least two decimal places. (c) Answer the question: Does this sample provide evidence that Variety A had a higher yield than Variety B? (Use a 5% level of significance) (Type: Yes or No)Explanation / Answer
The statistical software output for this problem is:
One sample T summary hypothesis test:
: Mean of population
H0 : = 0
HA : > 0
Hypothesis test results:
Hence,
b) Test statistic = 1.64
c) p - value > 0.05 so we do not reject Ho.
The answer is No
Mean Sample Mean Std. Err. DF T-Stat P-value 1.2 0.73067701 17 1.6423125 0.0594Related Questions
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