If a class is full of students like Pat, what is the mean mark? What is...
If a class is full of students like Pat, what is the mean mark? What is the standard deviation?
Homework Answers
assuming n = 10 and p = 0.2
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If a class is full of students like Pat, what is the mean mark?
What is...
Assume that a random sample of 37 full-time UT students found that their mean cost of...
Assume that a random sample of 37 full-time UT students found that their mean cost of textbooks for class is $488 with a standard deviation of $59. Test the claim that the mean cost of textbooks for full-time students is more than the average from 2010 which is $460. The test statistic is 2.89. Find the p-value.
The distribution of students’ heights in a class of 100 students is normal, with a mean...
The distribution of students’ heights in a class of 100 students is normal, with a mean height of 66 inches and a standard deviation of three. With these parameters, answer the associated question(s). What percentage of the class is between 64 inches and 67 inches tall? Round to the nearest tenths place if a fraction.
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?
The marks obtained by students from previous classes are normally distribution with a mean of 75...
The marks obtained by students from previous classes are normally distribution with a mean of 75 and a standard deviation of 10. the probability that a student is having a mark between 70 and 90 in this distribution? how many students will fail in Statistics if the passing mark is 65 for a class of 100 students?
For a 4-unit class like Statistics, students should spend average of 12 hours studying for the...
For a 4-unit class like Statistics, students should spend average of 12 hours studying for the class. A survey was done on 23 students, and the distribution of total study hours per week is bell-shaped with a mean of 13 hours and a standard deviation of 3.4 hours. Use the Empirical Rule to answer the following questions. a) 68% of the students spend between hours and hours on Statistics each week. b) 95% of the students spend between hours and...
For a 4-unit class like Statistics, students should spend average of 12 hours studying for the...
For a 4-unit class like Statistics, students should spend average of 12 hours studying for the class. A survey was done on 24 students, and the distribution of total study hours per week is bell-shaped with a mean of 13 hours and a standard deviation of 2.8 hours. Use the Empirical Rule to answer the following questions. a) 68% of the students spend between hours and hours on Statistics each week. b) 95% of the students spend between hours and...
1. (1 point) The ages of students in an evening class is normally distributed with mean...
1. (1 point) The ages of students in an evening class is normally distributed with mean 24 and standard deviation of 7, What fraction of students ages will be within 25 and 30? 256x 30
From the class survey, the mean birth weight of students is 7.1 pounds with a standard...
From the class survey, the mean birth weight of students is 7.1 pounds with a standard deviation of 1.1 pounds. At what weight is more than 80% of the students? Include a.) the distribution curve, b.) the z-curve, and c.) the solution.
A class has five students. What is the probability that exactly two of the students were...
A class has five students. What is the probability that exactly two of the students were born on a weekend? What is the number of trials, n, and the constant trial probability, p, for this example? What is the answer to the question given? What are the mean and standard deviation for this situation?
Suppose that the midterm score of a class is normally distributed with the mean of 68.2...
Suppose that the midterm score of a class is normally distributed with the mean of 68.2 points and the standard deviation of 11.3 points. Answer each question. Sketch the curve of the distribution representing the midterm score. Make sure to mark the mean and three standard deviations to either side of the mean. Find the probability that a randomly selected student has score at most 65.9 To be in the top 20% of the class, you need to score what...
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?
For a 4-unit class like Statistics, students should spend average of 12 hours studying for the class. A survey was done on 23 students, and the distribution of total study hours per week is bell-shaped with a mean of 13 hours and a standard deviation of 3.4 hours. Use the Empirical Rule to answer the following questions. a) 68% of the students spend between hours and hours on Statistics each week. b) 95% of the students spend between hours and...
1. (1 point) The ages of students in an evening class is normally distributed with mean 24 and standard deviation of 7, What fraction of students ages will be within 25 and 30? 256x 30
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