Question: QUESTION 4 [24 Marks] A researcher is interested to study the relevancy of lockdown to curb the spread of COVID-19 in Malaysia by looking at

QUESTION 4 [24 Marks] A researcher is interested to study the relevancy of lockdown to curb the spread of COVID-19 in Malaysia by looking at the relationship between the number of MySejahtera check-ins and the number of new cases reported. The data from the Ministry of Health Malaysia for seven randomly selected days are given in Table 1. Table I Number of Day MySejahtera check-ins Number of (in millions) new cases 1 19.8 2461 2 19.9 1870 14.6 3731 4 17.0 4530 5 14.5 5725 FINAL 18.9 1229 7 15.1 2464 D Identify the response variable. [1 Mark]Use the following partial information to calculate the coefficient of determination. Then, interpret its value. Ex=119.8, Ly=22010, Ex =2085.68, _xy =360870.4 S = 35.3886, 5 =-15815.0286 17 Marks] C Estimate the regression model parameters and write the estimated linear regression model. TI [6 Marks] AT iv) Test whether there is a significant relationship between the number of MySejahtera check-ins and number of new cases at 6% level of significance by using the f-test approach. APPLI (8 Marks] v) Based on your answer in iv), would you recommend lockdown if COVID-19 cases rise again? Justify your answer. 124 12 Marks]

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