Question

Consider the following hypothesis test. Họ: A 1 - 1 2 = 0 Ha: M1-M 2 > 0 The following results are for two independent samples taken from the two populations. Sample 1 Sample 2 ni = 30 n 2 = 50 X 1 = 25.2 x 2 = 22.3 01 = 5.3 0 2 = 7 a. What is the value of the test statistic (round to 2 decimals)? 2.09 b. What is the p-value (round to 4 decimals)? Use z-table. Use z-value rounded to 2 decimal places. c. With a = .05, what is your hypothesis testing conclusion? p-value is less than or equal to 0.05, reject Но

Answer 1

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7= 25.2 - 22.3 ni a) test statistici ser x , X2 ser bare 6,2 62² in rint za (5.3) 30. + 1772 so .:2=12.09 b) P-value = P(Z > 2.00] =10.0183 () P-value = 0.0183 < x=0.05 ni p-value is less than or equal to 0.0s, reject Ho morro Girl Cep.st Car PSE