Question
In: Statistics and Probability
In an agricultural experiment, the effects of two fertilizers on the production of oranges were measured....
In an agricultural experiment, the effects of two fertilizers on the production of oranges were measured. Seventeen randomly selected plots of land were treated with fertilizer A. The average yield, in pounds, was 457 with a standard deviation of 38. Twelve randomly selected plots were treated with fertilizer B. The average yield was 394 pounds with a standard deviation of 23. Find a 99% confidence interval for the difference between the mean yields for the two fertilizers. (Round down the degrees of freedom to the nearest integer and round the final answers to two decimal places.)
Solutions
Expert Solution
Solution :
=> A 99% confidence interval for the difference between the mean yields for the two fertilizers is (28.81, 97.19) (rounded)
orchestra answered 1 year agoRelated Solutions
Fertilizer: In an agricultural experiment, the effects of two fertilizers on the production of oranges were...
Fertilizer: In an agricultural experiment, the
effects of two fertilizers on the production of oranges were
measured. Thirteen randomly selected plots of land were treated
with fertilizer A, and
10
randomly selected plots were treated with fertilizer B. The
number of pounds of harvested fruit was measured from each plot.
Following are the results.
Fertilizer A
523
464
483
460
491
403
484
448
457
437
516
417
420
Fertilizer B
362
414
408
398
382
368
393
437
387...
Fertilizer: In an agricultural experiment, the effects of two fertilizers on the production of oranges were...
Fertilizer: In an agricultural experiment, the
effects of two fertilizers on the production of oranges were
measured. Thirteen randomly selected plots of land were treated
with fertilizer A, and
10
randomly selected plots were treated with fertilizer B. The
number of pounds of harvested fruit was measured from each plot.
Following are the results.
Fertilizer A
523
464
483
460
491
403
484
448
457
437
516
417
420
Fertilizer B
362
414
408
398
382
368
393
437
387...
Fertilizer: In an agricultural experiment, the effects of two fertilizers on the production of oranges were...
Fertilizer: In an agricultural experiment, the
effects of two fertilizers on the production of oranges were
measured. Twelve randomly selected plots of land were treated with
fertilizer A, and
7
randomly selected plots were treated with fertilizer B. The
number of pounds of harvested fruit was measured from each plot.
Following are the results.
Fertilizer A
464
483
441
491
403
466
448
457
437
516
417
420
Fertilizer B
362
414
412
398
382
377
393
Send data
to...
An experiment was conducted see the effect on fertilizer on production of Mameys. H0 : fertilizers...
An experiment was conducted see the effect on fertilizer on
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There are four treatment (a=4); three types of fertilizer and the
control. Each treatment has four replicates (n=4). The number of
mameys produced is given in the table below.
A. Using these data complete a 1-Way ANOVA
table.
F1: 1, 2, 6, 11
F2: 2, 4, 2, 4
F3:...
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A) Explain in words how you would draw a production
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C) Discuss THREE possible impacts of an improved
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Two different plant fertilizers are available. Set up an experiment to determine which will grow the...
Two different plant fertilizers are available. Set up an
experiment to determine which will grow the largest plant by
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The yield data (kg/plot) were collected from 20 plots. Each
fertilizer (A or B) was randomly assigned to 10 plots.
Fertilizer A
17.5
17.9
18.2
16.9
17.2
17.5
17.3
18.9
16.8
17.1
Fertilizer B
18.4
17.9
18.2
17.6
17.6
18.8
18.1
17.4
17.8
17.6
f. Conduct the appropriate hypothesis testing. Report the
test-statistics and p-values.
g. Make...
Phosphate pollution is caused by (a) sewage and phosphate rock (b) sewage and agricultural fertilizers (c)...
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(a) sewage and phosphate rock
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(c) phosphate rock only
(d) agricultural fertilizers only.
2. An experiment was conducted to test the effects of nitrogen fertilizer on lettuce production. Five...
2. An experiment was conducted to test the effects of nitrogen
fertilizer on lettuce production. Five rates of ammonium nitrate
were applied to four replicate plots in a completely randomized
design. The data are the number of heads of lettuce harvested from
the plot. Use α =0.05
Write the statistical effects model and completely specify each
component. State the necessary assumptions for the analysis.
Perform the appropriate analysis, identify what hypotheses are
being tested, the test statistic, critical value and...
Montgomery gathered data on an experiment in paper production to determine the effects of pulp cooking...
Montgomery gathered data on an experiment in paper production to determine the effects of
pulp cooking time (having two levels: 3 hours and 4 hours),
vat pressure (having three levels: 400, 500, and 650), and
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DO THE QUESTION IN SAS. PLEASE INCLUDE YOUR CODE TO GET THE
ANSWER.
(a) Fit a three-way ANOVA, including ALL possible interaction terms.
At a 5% significance level,...
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