Final averages are typically approximately normally distributed with a mean of 74 and a standard deviation...
Final averages are typically approximately normally distributed with a mean of 74 and a standard deviation of 11.5. Your professor says that the top 10% of the class will receive an A; the next 24%, a B; the next 33%, a C; the next 19%, a D; and the bottom 14%, an F. (Give your answers correct to one decimal place.)
(a) What average must you exceed to obtain an A?
(c) What average must you obtain to pass the course? (You'll need a
D or better.)
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Final averages are typically approximately normally distributed
with a mean of 74 and a standard deviation...
Scores on a test are normally distributed with a mean of 65 and a standard deviation...
Scores on a test are normally distributed with a mean of 65 and a standard deviation of 10. Find the score to the nearest whole number which separates the bottom 81% from the top 19%. A. 88 B. 68 C. 56 D 74
A professor at a local college noted that the grades of his students were normally distributed with an average percentage of 74 and a population standard deviation of 10
A professor at a local college noted that the grades of his students were normally distributed with an average percentage of 74 and a population standard deviation of 10. He found that 6.3% of his students received A's while 2.5% of his students failed the course and received F's. Based upon the professor's grading scale, what was the minimun percentage needed to get an A in the course?
ii) Suppose that the final mark for students in MATH1131 is approximately normally distributed with mean 59 and the standard deviation 7.44. Given that the pass marks is 50, what percentage of MA...
ii) Suppose that the final mark for students in MATH1131 is approximately normally distributed with mean 59 and the standard deviation 7.44. Given that the pass marks is 50, what percentage of MATH1131 stu- dents are expected to pass?
ii) Suppose that the final mark for students in MATH1131 is approximately normally distributed with mean 59 and the standard deviation 7.44. Given that the pass marks is 50, what percentage of MATH1131 stu- dents are expected to pass?
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...
A species of bird is approximately normally distributed with mean height of 80cm and standard dev....
A species of bird is approximately normally distributed with mean height of 80cm and standard dev. of 5cm. A. What proportion of these birds are taller than 86.5 cm? B. In a random sample of 6 birds, what is the probability that the average height is greater than 86 cm? C. What is the minimum height for the top 15% of birds? Show your work please!
A variable is normally distributed with mean 18 and standard deviation 2.
A variable is normally distributed with mean 18 and standard deviation 2. a. Determine the quartiles of the variable. b. Obtain and interpret the 90th percentile. c. Find the value that 65% of all possible values of the variable exceed. d. Find the two values that divide the area under the corresponding normal curve into a middle area of 0.95 and two outside areas of 0.025. Interpret the answer.
Scores on a test are normally distributed with a mean of 63.2 and a standard deviation of 11 7 Fi...
Scores on a test are normally distributed with a mean of 63.2 and a standard deviation of 11 7 Find P81 , which separates the bottom 81% from the top 19%, Round to two decimal places. O A. 66.60 O B. 0.29 ОС. 088 O D. 73.47
Scores on a test are normally distributed with a mean of 63.2 and a standard deviation of 11 7 Find P81 , which separates the bottom 81% from the top 19%, Round to...
A variable is normally distributed with mean 8 and standard deviation 2 . a. Determine the...
A variable is normally distributed with mean 8 and standard deviation 2 . a. Determine the quartiles of the variable. b. Obtain and interpret the 80 th percentile. c. Find the value that 65% of all possible values of the variable exceed. Bold d. nbsp Find the two values that divide the area under the corresponding normal curve into a D. middle area of 0.95 and two outside areas of 0.025. Interpret the answer.
Assume that the readings on the thermometers are normally distributed with a mean of 0° and standard deviation of 1.00°C
Assume that the readings on the thermometers are normally distributed with a mean of 0° and standard deviation of 1.00°C. A thermometer is randomly selected and tested Draw a sketch and find the temperature reading corresponding to the 88th percentile. This is the temperature reading separating the bottom 88% from the top 12%.Which graph represents Psa? Choose the correct graph below The temperature for Pas is approximately _______ (Round to two decimal places as needed)
6.92 A variable is normally distributed with mean 0 and standard deviation 4 a. Determine and...
6.92 A variable is normally distributed with mean 0 and standard deviation 4 a. Determine and interpret the quartiles of the variable. b. Obtain and interpret the second decile. c. Find the value that 15% of all possible values of the variable exceed. d. Find the two values that divide the area under the correspond- ing normal curve into a middle area of 0.80 and two outside areas of 0.10. Interpret your answer. 6.95 New York City 10-km Run. As...
ii) Suppose that the final mark for students in MATH1131 is approximately normally distributed with mean 59 and the standard deviation 7.44. Given that the pass marks is 50, what percentage of MATH1131 stu- dents are expected to pass?
ii) Suppose that the final mark for students in MATH1131 is approximately normally distributed with mean 59 and the standard deviation 7.44. Given that the pass marks is 50, what percentage of MATH1131 stu- dents are expected to pass?
Scores on a test are normally distributed with a mean of 63.2 and a standard deviation of 11 7 Find P81 , which separates the bottom 81% from the top 19%, Round to two decimal places. O A. 66.60 O B. 0.29 ОС. 088 O D. 73.47
Scores on a test are normally distributed with a mean of 63.2 and a standard deviation of 11 7 Find P81 , which separates the bottom 81% from the top 19%, Round to...
6.92 A variable is normally distributed with mean 0 and standard deviation 4 a. Determine and interpret the quartiles of the variable. b. Obtain and interpret the second decile. c. Find the value that 15% of all possible values of the variable exceed. d. Find the two values that divide the area under the correspond- ing normal curve into a middle area of 0.80 and two outside areas of 0.10. Interpret your answer. 6.95 New York City 10-km Run. As...
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