A sample of 49 people from East Carolina produced a mean of 7 and a standard dev

Question

A sample of 49 people from East Carolina produced a mean of 7 and a standard deviation of 6. A sample of 36 people from New Idaho produced a mean of 42 and a standard deviation of 13. What is the standard error of the random variable representing the difference of the sample means? Give your answer to two decimal places. A sample of 49 people from East Carolina produced a mean of 7 and a standard deviation of 6. A sample of 36 people from New Idaho produced a mean of 42 and a standard deviation of 13. What is the standard error of the random variable representing the difference of the sample means? Give your answer to two decimal places.

Explanation / Answer

n1 = 49 ,s1 = 6 , n2= 36 , s2 = 13

standard error = sqrt(s1^2/n1 +s2^2/n2)
= sqrt(6^2/49 + 13^2/36)
= 2.3301

Related Questions

Navigate

• Browse (All)
• Browse A
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.