Chapter Tests MTH 2651 - FA17 (CRN 4949) Test: Chapter 5 Test Time Remaining: O

Question

Chapter Tests MTH 2651 - FA17 (CRN 4949) Test: Chapter 5 Test Time Remaining: O This Question: 1 pt 11of26(0complete) This Tet Use the normal distribution of SAT ontical reading scores for which the mean506 and the standad dewason is 121 Assume the wanablexisnomaly dstb ted (a) What percent of the SAT verbal scores are less than 600 (b) If 1000 SAT verbal scores are randomly selected, about how many would you expect to be greater than 525 (a) Approximately%ofthe SAT verbal scores are less than 600. Round to two decimal places as needed) (o) You would expect that approximately SAT verbal soores would be greater than 525. (Round to the neanest whole number as needed Enter your arower in each of the answer boxes

Explanation / Answer

please revert if mean is not 506

a)P(X<600)=P(Z<(600-506)/121)= P(Z<0.7769)=0.7814 ~78.14%

b)P(X>525)=P(Z>0.1570)=0.4376

threfore number of people score greater than 525 =1000*0.4376 ~ 438

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