ne following results are for independent Fahdom samples taken Sample 1 Sample 2 - 20 n- 30 x - 22.7 x2- 20.1 $-2.9 $24.6 (0) What is the point estimate of the difference between the two population means? (Use x; - x2.) (b) What is the degrees of freedom for the t distribution? (Round your answer down to the nearest integer.) (c) At 95% confidence, what is the margin of error? (Round your answer to one decimal place.) (d) What is the 95% confidence interval for the difference between the two population means? (Use x, - x. Round your answers to one decimal place.) to

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