Dwayne And Christina Are Two Friends Who Say They Have No Previous Knowledge Of Statistics They Are Going To Take A Pla 1 (54.33 KiB) Viewed 13 times
Dwayne And Christina Are Two Friends Who Say They Have No Previous Knowledge Of Statistics They Are Going To Take A Pla 2 (15.67 KiB) Viewed 13 times
Dwayne and Christina are two friends who say they have no previous knowledge of statistics. They are going to take a placement test to see if they should start at the introductory level or not. The placement test is a multiple-choice test with 97 questions. Each question has 5 multiple-choice options with exactly one correct answer. What is the expected number (mean) of correct answers if a student were to randomly guess? (Do not round) What is the standard deviation for the number of correct answers if a student were to randomly guess? (Round to two decimal places) The usual number of correct answers, if a student were to randomly guess, would be to that would be within the interval.) What is the probability of getting 16 or more questions correct if you are randomly guessing? (Round to four decimal places.) What is the probability of getting 48 or more questions correct if you are randomly guessing? (Round to four decimal places.) Dwayne got 16 questions correct. Christina got 48 questions correct. Is it reasonable to believe that Dwayne had no prior knowledge of statistics? Oyes O no Why or why not? Edit - Insert Formats E BIU (Round to the nearest whole number M T (> Σ Σ Α
Is it reasonable to believe that Christina had no prior knowledge of statistics? Oyes O no Why or why not? Edit Insert Formats ▼ BIUX, ·E·E. $3 () Σ Σ Ad
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