Use this info to answer questions: At my jewelry store, Diane’s Diamonds, the av

Question

Use this info to answer questions:
At my jewelry store, Diane’s Diamonds, the average price of my diamonds is normally distributed with mean of 4000 dollars. I am wondering if a new shipment from Russia costs significantly more than my usual inventory. I get a sample of 7 of the new diamonds, and their average cost is 5200 dollars, with a standard deviation of 1300 dollars. Test to see if the new diamonds cost more than my inventory. Use 4 steps of hypothesis testing and alpha = .05
Question 35 3 pts What is the effect size and a correct interpretation of effect size? .92 There is a large effect of Russian diamonds on cost of diamonds. .92 92% of the variance in diamond cost can be explained by where diamonds come from. O .78 There is a large effect of Russian diamonds on cost of diamonds. O .78 78% of the variance in diamond cost can be explained by where diamonds come from. ? 2.7 There is a very large effect of Russian diamonds on cost of diamonds. O 2.7 27% of the variance in diamond cost can be explained by where diamonds come from.

Explanation / Answer

here as we know effect size =|sample mean-populaiton mean|/estimated std deviaiton

=|5200-4000|/1300=0.923

first option is correct

0.92

there is a large effect of Russian diamond on cst of diamonds

Related Questions

Navigate

• Browse (All)
• Browse U
• Subjects

---

---

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