The mean grade on a science test was 79 and there was a standard deviation of 6. If your sister scored an 88, what is her z-score
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A: Given that, A brother and sister took two different standardized tests. He scored 114 on a test…
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Q: John got 83 on a test, with a standard deviation of 10.73 and the class mean was 77.1. Paul got 88…
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Q: On a nationwide math test, the mean was 52 and the standard deviation was 4. If Roberto scored 85,…
A: The z score formula is,
Q: On a nationwide math test, the mean was 72 and the standard deviation was 7. If Roberto scored 70,…
A: Given that,Mean = 72Standard deviation = 7And X=70
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Q: Sarah'sscore on the Stats midterm was 81 points. The class average was 76 and the standard…
A: Given that Mean = 76 SD = 5 And the Sarah's score is X = 81
Q: A large chemistry course took their final exam. The mean was 75 with a standard deviation of 8. What…
A: Let us define the random variable , X. Let X represent the final exam scores. Here X follows Normal…
Q: On a nationwide math test, the mean was 72 and the standard deviation was 7. If Roberto scored 90,…
A: Given that, Mean = 72 Standard deviation = 7
Q: Ava scored a 92 on a test with a mean of 71 and a standard deviation of 15. Charlotte scored a 688…
A: HERE GIVEN , Ava scored a 92 on a test with a mean of 71 and a standard deviation of 15. Charlotte…
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Q: A large chemistry course took their final exam. The mean was 75 with a standard deviation of 8. What…
A: Given Information: Mean (u) = 75 Standard Deviation (s) = 8 To find: Exam scores that separates…
Q: Pattys final exams have an average of 78 and a standard deviation of 6. If she wants 4% of her…
A: X follows a Normal distribution with mean = 78 and S.D = 6 Then z=(x-mean)/SD = (x-78)/6 follows…
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A: given data Abby score x = 704 84th percentile σ = 141μ = ?
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Q: On a verbal skill test, the mean was 72 and the standard deviation was 7. If John scored 75, what…
A: Given data,Mean μ=72sd σ=7If John scored 75z-score=?
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A: The two values of Z that will contain 50% of scores lie are obtained as shown below:From the…
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- The first exam for a Stats course had a mean of 80 and a standard deviation of 4 points; the second had a mean of 70 and a standard deviation of 15 points. Reginald scored an 80 on the first test and an 85 on the second. Sara scored an 88 on the first but only a 65 on the second. Although Reginald's total score is higher, Sara feels she should get the higher grade. Explain her point of view.The local pilots association examined records from this year's census of its members. Tom is a member, and the census shows that he has 4210 hours of flight experience. The census also shows that among all members of the association the mean flight experience is 3095 hours with a standard deviation of 679 hours. Find the z-score of Tom's flight experience relative to the flight experiences of all the members of the pilots association. Round your answer to two decimal places.What percentage of the widget Weights lie between 55 and 79 ounces when the mean is 61 and the standard deviation is 6 ?
- A class has an equal number of boys and girls. The boys all got78% on a test and the girls all got 84%.. What are the mean and standard deviation of thetest scores for the entire class?According to the U.S. Census, the average adult woman is the United States is 65 inches tall and the standard deviation is 3 inches. If Zsike is 67 inches tall, what is her z-score?Carla scored a 31 on her ACT and an 750 on her SAT. If the mean and standard deviation for the ACT are 18 and 7, respectively; and the mean and standard deviation of the SAT are 500 and 150, respectively - what is her percentile rank on each exam? Percentile rank of ACT Percentile rank of SAT On which exam did she do better?
- Mariah and Amanda began arguing about who did better on their tests, but they couldn't decide who did better given that they took different tests. Mariah took a test in English and earned a 81, and Amanda took a test in Art History and earned a 61.8. Use the fact that all the students' test grades in the English class had a mean of 75.7 and a standard deviation of 9, and all the students' test grades in Art History had a mean of 60.7 and a standard deviation of 10.3 to answer the following questions.a) Calculate the z-score for Mariah's test grade.z=b) Calculate the z-score for Amanda's test grade.z=c) Which person did relatively better? Mariah Amanda They did equally well.Jared has a mean of 74 on his quizzes, with a standard deviation of 7. On his most recent quiz, he scored a 65. Is this unusual compared to how he usually performs on quizzes?My Physics professor announced that top 18% will get A in the class. Class mean is 72, and standard deviation is 6. To get the grade A, what score should I get at least?
- Suppose you are told that you scored two standard deviations below the mean on a measure where the mean was 90 and the standard deviation was8. What is your score?In the School of Medicine at Florida State University, the mean IQ is 116 with a standard deviation of 14. Given this information, what IQ score would correspond to a z-score of -1.5? 123 118 104 95Neil scored 67 on his calculus class final and was devastated by his failing grade. His class distribution had a mean of 54 and a standard deviation of 7. Greg was quite proud of his score of 88 for his Spanish language class. His class distribution had a mean of 97 with a standard deviation of 6. Who did better relative to their class?
