1 - What is the sample average percent of seeds that are infected? Round your answer to two decimal places?2 - What is standard deviation for the percent of seeds that are infected? Round your answer to two decimal places. 3 - According to the R output from the t.test() function, the test statistic is: (Round your answer to four decimal places)4 - According to the R output from the t.test() function, the p-value is: (round your answer to four decimal places)5 - The t.test() output also provides you with a 90% confidence interval for the true mean percent of seeds infected. What is the lower bound of the interval? Round your answer to two decimal places.6 - What is the upper bound of the 90% confidence interval? Round your answer to two decimal places. Velvetleaf is a particularly annoying weed in corn fields. It produces lots of seeds, and the seeds wait inthe soil for years until conditions are right. The velvetleaf seed beetle feeds on the seeds and might be anatural weed control. Here are the total seeds, seeds infected by the beetle, and percent of seedsinfected for 28 velvetleaf plants:Seeds 2450 2504 2114 1110 2137 8015 1623 1531 2008Infected 135 101737631121 189445.6 2.6 1.7 2.9 3.5Percent5.5 4.2 3.6Seeds721Infected27Percent 3.5242.1863 1136 281940 41794.8 3.6 2.71911 210182854.53.81961 1809Seeds 2228 363 5973 1050Infected 156 31 2407.2 8.6 4.1 8.7 7.0 5.091 137 92Percent1051 218 1711420644.00.03.713054.0In R, do a complete analysis of the percent of seeds infected by the beetle.880232.51716120.816474.4 R CodePercent=c(5.5,4.2,3.6, 2.1, 5.6,2.6,1.7,2.9,3.5,0.8,3.5,4.8,3.6,2.7,4.5,3.8, 4.0,0.0,3.7,4.4,7.2,8.6, 4.1,8.7,7.0,5.0, 4.0,2.5)hist (Percent)mean (Percent)sd (Percent)t.test(Percent, mu = = 5.0, conf.level=0.90)

Given information: The data is given related to percent of seeds that are infected. Level of…

Answered: 1 - What is the sample average percent…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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Related questions

Question

1 - What is the sample average percent of seeds that are infected? Round your answer to two decimal places?

2 - What is standard deviation for the percent of seeds that are infected? Round your answer to two decimal places.

3 - According to the R output from the t.test() function, the test statistic is: (Round your answer to four decimal places)

4 - According to the R output from the t.test() function, the p-value is: (round your answer to four decimal places)

5 - The t.test() output also provides you with a 90% confidence interval for the true mean percent of seeds infected. What is the lower bound of the interval? Round your answer to two decimal places.

6 - What is the upper bound of the 90% confidence interval? Round your answer to two decimal places.

Velvetleaf is a particularly annoying weed in corn fields. It produces lots of seeds, and the seeds wait in
the soil for years until conditions are right. The velvetleaf seed beetle feeds on the seeds and might be a
natural weed control. Here are the total seeds, seeds infected by the beetle, and percent of seeds
infected for 28 velvetleaf plants:
Seeds 2450 2504 2114 1110 2137 8015 1623 1531 2008
Infected 135 101
73
76
31
121 189
44
5.6 2.6 1.7 2.9 3.5
Percent
5.5 4.2 3.6
Seeds
721
Infected
27
Percent 3.5
24
2.1
863 1136 2819
40 41
79
4.8 3.6 2.7
1911 2101
82
85
4.5
3.8
1961 1809
Seeds 2228 363 5973 1050
Infected 156 31 240
7.2 8.6 4.1 8.7 7.0 5.0
91 137 92
Percent
1051 218 1711
42
0
64
4.0
0.0
3.7
130
5
4.0
In R, do a complete analysis of the percent of seeds infected by the beetle.
880
23
2.5
1716
12
0.8
164
7
4.4

R Code
Percent=c(5.5,4.2,3.6, 2.1, 5.6,2.6,1.7,2.9,3.5,0.8,3.5,4.8,3.6,2.7,4.5,3.8, 4.0,0.0,3.
7,4.4,7.2,8.6, 4.1,8.7,7.0,5.0, 4.0,2.5)
hist (Percent)
mean (Percent)
sd (Percent)
t.test(Percent, mu = = 5.0, conf.level
=
0.90)

Definition Definition Measure of central tendency that is the average of a given data set. The mean value is evaluated as the quotient of the sum of all observations by the sample size. The mean, in contrast to a median, is affected by extreme values. Very large or very small values can distract the mean from the center of the data. Arithmetic mean: The most common type of mean is the arithmetic mean. It is evaluated using the formula: μ = 1 N ∑ i = 1 N x i Other types of means are the geometric mean, logarithmic mean, and harmonic mean. Geometric mean: The nth root of the product of n observations from a data set is defined as the geometric mean of the set: G = x 1 x 2 ... x n n Logarithmic mean: The difference of the natural logarithms of the two numbers, divided by the difference between the numbers is the logarithmic mean of the two numbers. The logarithmic mean is used particularly in heat transfer and mass transfer. ln x 2 − ln x 1 x 2 − x 1 Harmonic mean: The inverse of the arithmetic mean of the inverses of all the numbers in a data set is the harmonic mean of the data. 1 1 x 1 + 1 x 2 + ...

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