Question

Confirmed Cases CA: 18517, 3315, 2826, 2018, 1845, 1666, 1401, 1340, 1019

Confirmed Cases WA: 5637, 2243, 1212, 923, 383, 330, 293, 283, 282

The data you are being provided with relates to information collected about the current COVID-19 pandemic. your role as a behavioral research assistant is to analyze the data and demonstrate whether or not there is a statistical difference in the number of identified cases

Experimental Hypothesis

Research prediction based on an "observation".

Fully demonstrated knowledge of concepts as required.

Answer 1

Answer:

Given,

Confirmed Cases CA: 18517, 3315, 2826, 2018, 1845, 1666, 1401, 1340, 1019

Confirmed Cases WA: 5637, 2243, 1212, 923, 383, 330, 293, 283, 282

For this data,

Mean Variance Stand. Dev. Group 1 3771.8889 31107393.1111 5577.4002 9 1.2746 16 Group 2 1287.3333 3089212.25 1757.6155 n 9 t d.o.f

We use hypothesis test to demonstrate whether or not there is a statistical difference in the number of identified cases:

The hypotheses are:

H0: μ1 - μ2 = 0

Ha: μ1 - μ2 ≠ 0

significance level (alpha) = 0.05

From the output,

Test statistic (t) = 1.2746

Degrees of Freedom = 16

For this, p-value = 0.2207 (using calculator)

As p-value > 0.05 (alpha), we fail to reject H0.

Therefore, there is not enough evidence that there is a statistical difference in the number of identified cases