site/ region/ rain /temp /plantcov / antspecies/ diversity 2 Dry Steppe 196 5.7

Question

site/ region/ rain /temp /plantcov / antspecies/ diversity

2 Dry Steppe 196 5.7 52 3 0.83
3 Dry Steppe 179 7.0 40 52 1.31
4 Dry Steppe 197 8.0 43 7 1.48
5 Dry Steppe 149 8.5 27 5 0.97
6 Gobi Desert 112 10.7 30 49 0.46
7 Gobi Desert 125 11.4 16 5 1.23
8 Gobi Desert 99 10.9 30 4 *
9 Gobi Desert 125 11.4 56 4 0.76
10 Gobi Desert 84 11.4 22 5 1.26
11 Gobi Desert 115 11.4 14 4 0.69

I have a mini tab project due tomorrow and i dont unerstand how to do this question

Botanist placed seed baits at 11 study sites and observed the number of ants species attracted to each site. the data is listed above. do these data indicated that the average number of any species differs from 5?

a). what are the appropriote null and alternitive hypotheses?

b). do a normal scores plot to check the normal assumption

c). perform the test

what is the value of your test statistics?

what is the p-value of the test?

what is you conclusion using alpha=.05

Explanation / Answer

Data:

For antspecies we found the below data

4

Perform t test for diff in means

a). what are the appropriote null and alternative hypothesis?

null hypothesis:

Ho: drysteppe -gobidesert = 5

alternative hypothesis

H1: drysteppe -gobidesert 5

Alternative Hypothesis is the claim to be proved by t test

level of significnace=0.05

Solutionc:

he value of your test statistic=t=-0.234

p value=0.8206

As p value > level of significance that is

0.8206>0.05

Statistical Decision:

Fail to Reject Null hypothesis

Accept Null hypothesis

Conclusion:

There is insufficient evidence at 5% level of significance that the data indicated that the average number of any species differs from 5

4

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