A final exam in Math 160 has a mean of 73 with standard deviation 7.73. Assume that a random sample of 24 students is selected and the test score of the sample is computed. Assuming the scores are normally distributed, what percentage of sample means are less than 76? Round the standard score to the nearest tenth before using the zscore tables. Round the final answer to the nearest hundredth of a percent.
 👍
 👎
 👁
 ℹ️
 🚩
1 answer

I get .651 or 65.1 percent
http://onlinestatbook.com/2/calculators/normal_dist.html 👍
 👎
 ℹ️
 🚩
Answer this Question
Related Questions

Statistics
The scores on a math test are normally distributed. if the mean is 72 and the standard deviation is six, what is the range of 98% of the scores?
 asked by Barb
 2,474 views

O98 algebra
To receive a C grade, a student must average more than a 77 but less than 85. If Emma received a C in the course and had five grades of 74,83,73,67,and 85 before taking the final exam, what were the possible grades for her final there were 100 points.
 asked by Sheba
 2,485 views

Statistics
Which of the following is NOT sensitive to extreme values? A) the range B) the standard deviation C) the interquartile range D) the coefficient of variation I pick B the standard deviation
 asked by Alex
 6,984 views

statistics
Suppose the final exam scores in a large class is symmetric mound shaped with a mean of 70 points and standard deviation of 10 points. The percentage of students in the class who receive more than 60 points is approximately
 asked by Anonymous
 2,144 views

statistics
The time needed to complete a final examination in a particular college course is normally distributed with a mean of 79 minutes and a standard deviation of 8 minutes. Answer the following questions. Assume that the class has 60 students and that the
 asked by margaret
 4,656 views

Mathematics
Assume that adults have iq scores that are normally distributed with a mean of 100 and a standard deviation of 15 as on the Wechsler test find the iq score separating the top 14% from the others
 asked by Terrence
 645 views

Math
The mean score on the exit examination for an urban high school is 63 with a standard deviation of 9. What is the standard deviation of the distribution of sample means with a sample size of 9? A. 2 B. 3 C. 4 D. 4.1 answer B
 asked by angela
 1,632 views

math
. A student’s final grade in chemistry is determined by the following weights: Quizzes 5% Exam 1 20% Exam 2 20% Lab Reports 15% Research Paper 15% Final Exam 25% The student received the following grades: Lab reports: 75 80 70 75 85 69 90 75 Quizzes: 85
 asked by Leah brown
 665 views

Probability #2
Baggage fees. An airline charges the following baggage fees: $25 for the rst bag and $35 for the second. Suppose 54% of passengers have no checked luggage, 34% have one piece of checked luggage and 12% have two pieces. We suppose a negligible portion of
 asked by Sanaya
 5,514 views

Statistics
The table below shows the LOS for a sample of 11 discharged patients. Using the data in the table, calculate the mean, range, variance, and standard deviation, and then answer questions e and f. Round the variance and standard deviation to one decimal
 asked by Anonymous 11/9/13
 2,517 views

Statistics
Suppose that IQ scores have a bellshaped distribution with a mean of 99 and a standard deviation of 12. Using the empirical rule, what percentage of IQ scores are less than 87? Please do not round your answer. 8799 = 12/12 = 1 I get stuck here. I know
 asked by Comet
 2,921 views

Stats
Suppose the scores of students on an exam are Normally distributed with a mean of 297 and a standard deviation of 66. Then approximately 99.7% of the exam scores lie between the numbers _____and _______such that the mean is halfway between these two
 asked by Please and Thank you!!!
 3,787 views

statistics
Last week Tom had exams in Math and in Spanish. He had a score of 45 on the Math exam and a score of 65 on the Spanish exam. For which class should Tom expect the better grade? a. Math b. Spanish c. The grades should be the same because the two exam scores
 asked by Lyndyc
 1,123 views

math
A researcher predicts that listening to music while solving math problems will make a particular brain area more active. To test this, a research participant has her brain scanned while listening to music and solving math problems, and the brain area of
 asked by Donna
 655 views

statistics
The scores on the final exam in a course have approximately a bellshaped distribution. The mean score was 72, the highest score was 99, and the lowest score was 41. Use the value of the range (58) to estimate the value of the standard deviation. (Round
 asked by Chris
 1,108 views

Algebra
A student in a PreCalculus class has test scores of 70, 73, 61, and 79. The final exam is worth 2 test grades. Write a linear equation that models this problem, where x is the grade on the final exam and y is the student's grade in the course. What grade
 asked by Maddie
 802 views

college math
20. Calculate the range, variance, and standard deviation of the following data set: 5, 5, 6, 6, 6, 8, 8, 8, 8, 10, 10, 11, 12, 12, 20 (Points: 5) Range = 15; Variance = 225; Standard Deviation = 7.5 Range = 3.85; Variance = 14; Standard Deviation = 3.74
 asked by Anonymous
 3,703 views

statistics
A student's course grade is based on one midterm that counts as 5% of his final grade, one class project that counts as 25% of his final grade, a set of homework assignments that counts as 35% of his final grade, and a final exam that
 asked by Karen Ventura
 6,099 views

Math
According to these data, the mean time students spent on the exam was 94.1 minutes, and the standard deviation was 24.23 minutes. Suppose the exam proctor realized after compiling these data that he had used the wrong start time in his calculation, so that
 asked by Marquita
 2,111 views

Economics
HELLLPP!! hi ive already went to brainly for this but can someone pleaseee give answers to the 10th grade economics semester a final exam i usually don't cheat but i'm soo desperate to pass its the 25 question exam. i would of typed out all the questions
 asked by annabell
 899 views
Still need help?
You can ask a new question or browse existing questions.