The scores on an economics examination are normally distributed with a mean of 74 and a...
The scores on an economics examination are normally distributed with a mean of 74 and a standard deviation of 12. If the instructor assigns a grade of A to 13% of the class, what is the lowest score a student may have and still obtain an A?
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The scores on an economics examination are normally distributed
with a mean of 74 and a...
The scores on an economics examination are normally distributed with a mean of 67 and a...
The scores on an economics examination are normally distributed with a mean of 67 and a standard deviation of 12. If the instructor assigns a grade of A to 11% of the class, what is the lowest score a student may have and still obtain an A? (Round your answer to two decimal places.) You may need to use the appropriate table in the Appendix of Tables to answer this question.
Please help and work out :) There are two parts to this problem A)The scores on...
Please help and work out :) There are two parts to this problem A)The scores on an economics examination are normally distributed with a mean of 71 and a standard deviation of 13. If the instructor assigns a grade of A to 13% of the class, what is the lowest score a student may have and still obtain an A? B)Use the appropriate normal distribution to approximate the resulting binomial distribution. A basketball player has a 80% chance of making...
Let Z be the standard normal variable. Find z if z satisfies the given value. (Round...
Let Z be the standard normal variable. Find z if z satisfies the given value. (Round your answer to two decimal places.) P(Z > 2) = 0.9535 z = To be eligible for further consideration, applicants for certain civil service positions must first pass a written qualifying examination on which a score of 75 or more must be obtained. In a recent examination, it was found that the scores were normally distributed with a mean of 70 points and a...
3. (4 points) The scores on a test are normally distributed with a mean of 75...
3. (4 points) The scores on a test are normally distributed with a mean of 75 and a standard deviation of 8. a) Find the proportion of students having scores greater than 85. b) If the bottom 3% of students will fail the course, what is the lowest score that a student can have and still be awarded a passing grade? Please round up to the nearest integer.
A set of final examination grades in an introductory statistics course is normally distributed, with a...
A set of final examination grades in an introductory statistics course is normally distributed, with a mean of 73 and a standard deviation of 7. Complete parts (a) through (d). a. What is the probability that a student scored below 86 on this exam? (Round to four decimal places as needed.) b. What is the probability that a student scored between 66 and 93? (Round to four decimal places as needed.) c. The probability is 55% that a student taking...
An instructor gives a 100-point examination in which the grades are normally distributed with a mean...
An instructor gives a 100-point examination in which the grades are normally distributed with a mean of 70 and a standard deviation of 8. (a) What proportion of students will get a score of 80 or higher? (b) If the instructor decides to give an A to students whose scores rank in top 5%, what is the cutoff score?
Scores on a recent Stat test were normally distributed with mean 77.26 and standard deviation 8.38....
Scores on a recent Stat test were normally distributed with mean 77.26 and standard deviation 8.38. What was the lowest score a student could earn and still be in the top 10%? (Round your answer to the nearest integer.)
Problem 3: Scores on an exam are assumed to be normally distributed with mean /u =...
Problem 3: Scores on an exam are assumed to be normally distributed with mean /u = 75 and variance a2 = 25 (1) What is the probability that a person taking the examination scores higher than 70? (2) Suppose that students scoring in the top 10.03% of this distribution are to receive an A grade. What is the minimum score a student must achieve to earn an A grade? (3) What must be the cutoff point for passing the examination...
The combined math and verbal scores for students taking a national standardized examination for college admission,...
The combined math and verbal scores for students taking a national standardized examination for college admission, is normally distributed with a mean of 660 and a standard deviation of 220. If a college requires a student to be in the top 20 % of students taking this test, what is the minimum score that such a student can obtain and still qualify for admission at the college?
examination grades in an introductory statistics course is normally distributed, with a mean of 75 and...
examination grades in an introductory statistics course is normally distributed, with a mean of 75 and a standard deviation of 7. Complete parts (a) through (d) a. What is the probablity that a student scored below 87 on this exam? The probability that a shudent scored below 87 is (Round to four decimal places as needed.) b What is the probability that a student scored between 68 and 94 The probability that a student soored between 68 and 94 is...
The scores on an economics examination are normally distributed with a mean of 67 and a standard deviation of 12. If the instructor assigns a grade of A to 11% of the class, what is the lowest score a student may have and still obtain an A? (Round your answer to two decimal places.) You may need to use the appropriate table in the Appendix of Tables to answer this question.
Let Z be the standard normal variable. Find z if z satisfies the given value. (Round your answer to two decimal places.) P(Z > 2) = 0.9535 z = To be eligible for further consideration, applicants for certain civil service positions must first pass a written qualifying examination on which a score of 75 or more must be obtained. In a recent examination, it was found that the scores were normally distributed with a mean of 70 points and a...
3. (4 points) The scores on a test are normally distributed with a mean of 75 and a standard deviation of 8. a) Find the proportion of students having scores greater than 85. b) If the bottom 3% of students will fail the course, what is the lowest score that a student can have and still be awarded a passing grade? Please round up to the nearest integer.
Problem 3: Scores on an exam are assumed to be normally distributed with mean /u = 75 and variance a2 = 25 (1) What is the probability that a person taking the examination scores higher than 70? (2) Suppose that students scoring in the top 10.03% of this distribution are to receive an A grade. What is the minimum score a student must achieve to earn an A grade? (3) What must be the cutoff point for passing the examination...
examination grades in an introductory statistics course is normally distributed, with a mean of 75 and a standard deviation of 7. Complete parts (a) through (d) a. What is the probablity that a student scored below 87 on this exam? The probability that a shudent scored below 87 is (Round to four decimal places as needed.) b What is the probability that a student scored between 68 and 94 The probability that a student soored between 68 and 94 is...
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