# Stat 200 week 6 quiz-2

**STAT 200 QUIZ 2 WEEKS 3, 4, 5, 6 (16 @ 0.5 pts = 8 tops)**

**SHOW YOUR CALCULATIONS NOT SOFTWARE **

**SUBMIT ANSWER SHEET ONLY NOT THESE QUIZ PROBLEMS**

**1. For a set of quantity, if the medium is similar to the median, its arrangement agency be:**

**a. Right-skewed**

**b. Left-skewed**

**c. Normally distributed**

**d. Positively-skewed**

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**2. In the graph, there are two distrubitions and we can ascertain (Select ALL that apportion):**

**a. The medium of arrangement A> the medium of arrangement B**

**b. The medium of arrangement A < the medium of arrangement B**

**c. The banner irregularity of arrangement A> the std irregularity of arrangement B**

**d. The banner irregularity of arrangement A= the st irregularity of arrangement B**

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**3. (T/F) A BOX PLOT gives us extensive advice environing a postulates set, including the compute of postulates tops in any dedicated dispose.**

**4. There are 20 coupons rolled up and placed after a whilein rotund malleable balls in a box. There are 3 contrariant types of coupons: 10 of them can be redeemed for “free drinks”, 5 can be redeemed for “free desserts”, and 5 can be redeemed for “free entrees”. If you shiver the box and then randomly chosen one coupon. What’s the verisimilitude that you procure get a “free entree coupon”? (a) 25% (b) 10% (c) 20% (d) 50% (e) None of these **

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**5. Mary was emiting a counterfeit. She emited three occasions. What’s the verisimilitude that at the primeval emit she gets a leader, the avoid emit she gets a subordination at and the third occasion she get a subordination? (a) 3/8 (b) 0.50 (c) 12.5% (d) 25%**

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**6. 100,000 people: twenty percent are manifestation younger and 7% of those manifestation are malnourished. How numerous manifestation malnourished? (a) 1000 (b) 1400 (c) 1200 (d) 1600**

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**7. A recognized arrangement of postulates tops has a medium of 15 and a banner irregularity of 5. What is the bannerized Z-VALUE for a postulates top after a while a rate of 7? (a) +1.3 (b) -1.6 (c) -2.1 (d) +1.6**

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**8. In this postulates set overhead, what is the verisimilitude that a postulates top is 7 or near?**

**(a) 4.5% (b) 0.095 (c) 0.055 (d) 55%**

**9. TOSSING A COIN: Using the Recognized to trench the Binomial (NOT the abstruse formulas) after a while a What is the verisimilitude of (binomial) postulates getting 17 to 21 leaders out of 36 emites? THE RANGE FOR WHICH WE DETERMINE THE Z VALUES FOR THE LOW AND HIGH ENDS IS?**

**(a) 17 to 21 (b) 17.5 to 19.5 (c) 16 to 22 (d) 16.5 to 21.5**

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**10. What are the MEAN and Banner irregularity approximations we use for this investigation?**

**(a) 18 and 3 (b) 17 and 10 (c) 18 and 9 (d) 16 and 3 (e) None of these**

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**11. What are the z-Values that fit to the dispose you unshaken in #9 overhead?**

**(a) +0.5 and -1.17 (b) -0.5 and +1.17 (c) - 0.16 and +0.38 (d) none of these **

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**12. For these z-Values from #11, what are the areas (probabilites) to the LEFT ?**

**(a) 0.3085 and 87.9% (b) 3.85% and 0.0879 (c) 0.4801 and 13% (d) 4.81% and 95.2%**

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**13. FINALLY, what is the trench verisimilitude of 17 to 21 leaders out of 35 counterfeit emites using the Recognized to trench the Binomial?**

**(a) 67% (b) 57% (c) 0.43 (d) 0.057 (e) None of these**

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**14. CONFIDENCE INTERVALS IF WE HAVE THE MEAN BUT NOT THE STANDARD DEVATION WE USE THE _______, BUT IF WE HAVE THE MEAN AND THE STANDARD DEVAITION WE USE THE _________**

**(a) z-Tables and t-Tables (b) t-Tables and z-Tables (c) neither, we can’t investigate a assurance cessation. **

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**15. Using the t-Tables after a while an ****α**** of 5% the Assurance Cessation would possess limits at:**

**(a) 5% and 95% (b) 0.025 and 0.975 (c) 1% and 99% (d) none of these**

**16. Investigate the 99% Assurance Cessation for 41 pattern postulates tops after a while a medium (m) of 25 and a banner irregularity (s) of 5**

**(a) 21 to 29 (b) 23 to 27 (c) 24 to 26 (d) 22.5 to 27.5**

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