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4. (15 pts) For the online lecture of our course, 20% of students do not watch...
Suppose tuition is $800/course plus a $10,000 fee for international students, i.e. 800X + 10000Y. c)...
Suppose tuition is $800/course plus a $10,000 fee for
international students, i.e. 800X + 10000Y.
c) (2) Find the mean and variance of the amount of tuition a
random student pays.
d) (2) Find the probability that a random student pays at least
$4000 in tuition.
e) (2) Given that a student pays at least $4000 in tuition, find
the probability that they are an international student.
f) (2) Now suppose instead of the earlier formula, the tuition
is $800...
Problem # 4, An attempt to establish a video call via some social media app may fail with probability 0.1. If connection is established and if no connection failure occurs thereafter, then the durati...
Problem # 4, An attempt to establish a video call via some social media app may fail with probability 0.1. If connection is established and if no connection failure occurs thereafter, then the duration of a typical video call in minutes is an exponential random variable X with E [X] = 3. However, due to an unfortunate bug in the app all calls are disconnected after 6 minutes. Let random variable Y denote the overall call duration (i.e., Y =...
Ework assignments. Please see the course syllabus for This one is due at the beginning 1. (5 pts....
ework assignments. Please see the course syllabus for This one is due at the beginning 1. (5 pts.) TRUE OR FALSE: (a) Let R denote a plane region, and (u,v) (u(,y),v)) be a different set of coordinates for the Cartesian plane. Then for any function F(u,v) F(u, v)dudvF(u(r, y),v(x, y))dzdy (b) Let R denote a plane region, and (u, v) (u(r, w),v(x, y)) be a different set of coordinates for the Cartsian plane. Then do (c) Let R denote a...
5. North Carolina State University posts the complete grade distributions for its courses online. The distribution of grades for all students in all sections of Accounting 210 in the spring semester...
5. North Carolina State University posts the complete grade distributions for its courses online. The distribution of grades for all students in all sections of Accounting 210 in the spring semester of 2001 was Grade Probability .18 32 34 09 07 a. Using the scale A -4, B-3, C-2, D- 1, and F 0, let Xbe the grade of a randomly chosen b. Let X denote the mean grade for a random sample of 50 students from Accounting 210. Since...
nter?mode-eval&course.jd 78 Problem 5 Approximately 60% of statistics students do teir homework in time for it...
nter?mode-eval&course.jd 78 Problem 5 Approximately 60% of statistics students do teir homework in time for it to be collected and graded. Each student does homework Independently. We select a random sample of 25 students. Let X denote the number of students who do their homework on time. a. (3%) X may take on integer values from to b. (3%) Give the distribution of X :X- Cekone® 3%) How many are expected to do their homework on time? /1X1- d. (396)...
please answer this economics question completely..thank you its urgent. a. III- (5pts) In an econometrics course,...
please answer this economics
question completely..thank you its urgent.
a. III- (5pts) In an econometrics course, the relationship between the expected score earned by students s related to the time in minutes) spent taking it, according to the following model: E(Score/Time) = 49+0.24Time What is the estimated effect of an additional 10 minutes on a student's score? b. Find the expected Score for a student who is given 120 minutes to complete the exam. (1pt) c. If the student in...
5. (20 pts) Suppose on a given college campus 45% of the students own an iPhone,...
5. (20 pts) Suppose on a given college campus 45% of the students own an iPhone, 50% an Android smartphone and 5% some other type of phone. Let X=the number of students in a simple random sample of 15 students who own an iPhone. A. What is the probability distribution of X? Note: If this is a well-known distribution it is sufficient to name the distribution and identify the value of the parameters B. Find the probability that 8 students...
1. (15 pts.) The results of our MIDTERM in MATH 279 are as follows: 75,22,36,34,55,56,27,83,17,58,57,42,58,52,42,82,27.92.52,42,100,83,27,58,52. (a)...
1. (15 pts.) The results of our MIDTERM in MATH 279 are as follows: 75,22,36,34,55,56,27,83,17,58,57,42,58,52,42,82,27.92.52,42,100,83,27,58,52. (a) Find the mean and standard deviation. (b) Display the data in a stem-and-leaf plot. (C) Find the median and quartiles. 2. (14 pts.) Let X denote the number of patients who suffer an infection in a hospital per week with the following probabilities: x 10 1 2 3 f(x) 0.6 0.25 0.1 0.05 Find the following: (a) Cumulative distribution function, F(x); (b) Mean and...
Some statistics instructors have students use an online homework system and some do not. Final exam...
Some statistics instructors have students use an online homework system and some do not. Final exam scores were recorded for a sample of statistic students who used an online homework system and were compared to the final exam scores from a sample of statistic students who did not use an online homework system. Is there evidence that the students who used an online homework system did better on the final? a) Test at the 3% level. b) Compute a 94%...
(4 points) A random sample of 12 second-year university students enrolled in a business statistics course was drawn...
(4 points) A random sample of 12 second-year university students enrolled in a business statistics course was drawn. At the course's completion, each student was asked how many hours he or she spent doing homework in statistics. The data are listed below. 51 64 63 54 63 52 63 57 55 65 59 58 It is known that the population standard deviation is 7. The instructor has recommended that students devote 5 hours per week for the duration of the...
Suppose tuition is $800/course plus a $10,000 fee for
international students, i.e. 800X + 10000Y.
c) (2) Find the mean and variance of the amount of tuition a
random student pays.
d) (2) Find the probability that a random student pays at least
$4000 in tuition.
e) (2) Given that a student pays at least $4000 in tuition, find
the probability that they are an international student.
f) (2) Now suppose instead of the earlier formula, the tuition
is $800...
Problem # 4, An attempt to establish a video call via some social media app may fail with probability 0.1. If connection is established and if no connection failure occurs thereafter, then the duration of a typical video call in minutes is an exponential random variable X with E [X] = 3. However, due to an unfortunate bug in the app all calls are disconnected after 6 minutes. Let random variable Y denote the overall call duration (i.e., Y =...
ework assignments. Please see the course syllabus for This one is due at the beginning 1. (5 pts.) TRUE OR FALSE: (a) Let R denote a plane region, and (u,v) (u(,y),v)) be a different set of coordinates for the Cartesian plane. Then for any function F(u,v) F(u, v)dudvF(u(r, y),v(x, y))dzdy (b) Let R denote a plane region, and (u, v) (u(r, w),v(x, y)) be a different set of coordinates for the Cartsian plane. Then do (c) Let R denote a...
5. North Carolina State University posts the complete grade distributions for its courses online. The distribution of grades for all students in all sections of Accounting 210 in the spring semester of 2001 was Grade Probability .18 32 34 09 07 a. Using the scale A -4, B-3, C-2, D- 1, and F 0, let Xbe the grade of a randomly chosen b. Let X denote the mean grade for a random sample of 50 students from Accounting 210. Since...
nter?mode-eval&course.jd 78 Problem 5 Approximately 60% of statistics students do teir homework in time for it to be collected and graded. Each student does homework Independently. We select a random sample of 25 students. Let X denote the number of students who do their homework on time. a. (3%) X may take on integer values from to b. (3%) Give the distribution of X :X- Cekone® 3%) How many are expected to do their homework on time? /1X1- d. (396)...
please answer this economics
question completely..thank you its urgent.
a. III- (5pts) In an econometrics course, the relationship between the expected score earned by students s related to the time in minutes) spent taking it, according to the following model: E(Score/Time) = 49+0.24Time What is the estimated effect of an additional 10 minutes on a student's score? b. Find the expected Score for a student who is given 120 minutes to complete the exam. (1pt) c. If the student in...
5. (20 pts) Suppose on a given college campus 45% of the students own an iPhone, 50% an Android smartphone and 5% some other type of phone. Let X=the number of students in a simple random sample of 15 students who own an iPhone. A. What is the probability distribution of X? Note: If this is a well-known distribution it is sufficient to name the distribution and identify the value of the parameters B. Find the probability that 8 students...
1. (15 pts.) The results of our MIDTERM in MATH 279 are as follows: 75,22,36,34,55,56,27,83,17,58,57,42,58,52,42,82,27.92.52,42,100,83,27,58,52. (a) Find the mean and standard deviation. (b) Display the data in a stem-and-leaf plot. (C) Find the median and quartiles. 2. (14 pts.) Let X denote the number of patients who suffer an infection in a hospital per week with the following probabilities: x 10 1 2 3 f(x) 0.6 0.25 0.1 0.05 Find the following: (a) Cumulative distribution function, F(x); (b) Mean and...
Some statistics instructors have students use an online homework system and some do not. Final exam scores were recorded for a sample of statistic students who used an online homework system and were compared to the final exam scores from a sample of statistic students who did not use an online homework system. Is there evidence that the students who used an online homework system did better on the final? a) Test at the 3% level. b) Compute a 94%...
(4 points) A random sample of 12 second-year university students enrolled in a business statistics course was drawn. At the course's completion, each student was asked how many hours he or she spent doing homework in statistics. The data are listed below. 51 64 63 54 63 52 63 57 55 65 59 58 It is known that the population standard deviation is 7. The instructor has recommended that students devote 5 hours per week for the duration of the...
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