Which of the following is NOT true? (Please use sleep variable to answer this question.) Answers:...
Which of the following is NOT true? (Please use sleep variable to answer this question.) Answers: A. The mean of sleep hours of stat students in this university is less than the national mean of the U.S adults. B. The mean of sleep hours of stat students in this university is larger than the national mean of the U.S adults. C. The mean number of sleep hours of stat students is significantly different from the national average.
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Which of the following is NOT true? (Please use sleep variable
to answer this question.) Answers:...
show work please Problem 2: Use the following to answer questions a)-e): A random sample of...
show work please
Problem 2: Use the following to answer questions a)-e): A random sample of 48 students at a large university reported getting an average of 7 hours of sleep on weeknights, with standard deviation 1.62 hours. A dotplot of the data is provided. 9.6 Weekniaht Sleep a. Briefly explain why it is reasonable to use a t-distribution to perform inference about the mean amount of weeknight sleep for students at this university. (2 points) The research question: It...
shoe work please Problem 2: Use the following to answer questions a) – e): A random...
shoe work please
Problem 2: Use the following to answer questions a) – e): A random sample of 48 students at a large university reported getting an average of 7 hours of sleep on weeknights, with standard deviation 1.62 hours. A dotplot of the data is provided. 0 4.8 5.6 8.8 9.6 6.4 7.2 8.0 Weeknight Sleep a. Briefly explain why it is reasonable to use a t-distribution to perform inference about the mean amount of weeknight sleep for students...
The Director of the Wellness Center is concerned that the number of hours of sleep that students ...
Hours of Sleep during Fall Semester
5.3
5.4
6.4
8.3
5.8
7.5
4.7
6.8
5.9
5.7
6.7
6.6
7.6
6.8
7.3
4.6
6.4
5.8
6.8
4.3
9.3
5.2
8.1
7.1
7.4
7.4
7.4
5.3
5.5
8.3
6.1
7.8
5.5
6.1
7.7
6.5
6.4
4.2
5.2
6.8
7.7
5.5
5.3
4.6
6.4
4.9
7
4.9
5.8
5.7
The Director of the Wellness Center is concerned that the number of hours of sleep that students who livc in thc dorms arc gctting...
Sleep: Assume the general population gets an average of 7 hours of sleep per night. You...
Sleep: Assume the general population gets an average of 7 hours of sleep per night. You randomly select 45 college students and survey them on their sleep habits. From this sample, the mean number of hours of sleep is found to be 6.89 hours with a standard deviation of 0.40 hours. You claim that college students get less sleep than the general population. That is, you claim the mean number of hours of sleep for all college students is less...
QUESTION 3 "In interval estimation, as the sample size becomes larger, the interval estimate" becomes narrower....
QUESTION 3 "In interval estimation, as the sample size becomes larger, the interval estimate" becomes narrower. becomes wider. "remains the same, because the mean is not changing." gets closer to 1.96. ОО QUESTION 4 "A random sample of 16 students selected from the student body of a large university had an average age of 25 years and a standard deviation of 2 years. We want to determine if the average age of all the students at the university is significantly...
It is recommended that adults get 8 hours of sleep each night. A researcher hypothesized college...
It is recommended that adults get 8 hours of sleep each night. A researcher hypothesized college students got less than the recommended number of hours of sleep each night, on average. The researcher randomly sampled 20 college students and calculated a sample mean of 7.5 hours per night. If the researcher wanted to perform a one-sample t-test, which of the following is a correct statement? Choose the correct answer below. A. The distribution of sample means will be normal even...
4. Suppose it is known that American adults sleep an average of 7.8 hours daily. You...
4. Suppose it is known that American adults sleep an average of 7.8 hours daily. You suspect that college students sleep less than this on average, so you collect a random sample of fifteen students at NCAT and get the following data on their typical daily sleep amount (in hours): 6.7 4.5 6.4 8.6 5.5 8.2 5.9 7.5 4.4 6.0 6.3 8.3 7.3 5.7 10.1 (a) Use this sample to see if there is sufficient evidence to conclude that the...
Please write answer and formula ON PAPER and please don’t forget p value graph and calculator...
Please write answer and formula ON PAPER and please don’t
forget p value graph and calculator function and test statistic
.
Stat 50 Final Exam Last Name First Name In a survey of 267 senior high school students, 43.1% said that, on average, they had less than 6 hours sleep each day. Test the claim that, on average, in the population of all senior students, the majority have less than 6 hours sleep each day. 9, Claim: Но: Ha: Random...
More than 100 million people around the world are not getting enough sleep; the average adult...
More than 100 million people around the world are not getting enough sleep; the average adult needs between 7.5 and 8 hours of sleep per night. College students are particularly at risk of not getting enough shut-eye. A recent survey of several thousand college students indicated that the total hours of sleep time per night, denoted by the random variable X, can be approximated by a normal model with E(X) 6.9 hours and SD(X)-1.2 hours. Question 1. Find the probability...
More than 100 million people around the world are not getting enough sleep; the average adult...
More than 100 million people around the world are not getting enough sleep; the average adult needs between 7.5 and 8 hours of sleep per night. College students are particularly at risk of not getting enough shut-eye. A recent survey of several thousand college students indicated that the total hours of sleep time per night, denoted by the random variable X, can be approximated by a normal model with E(X) = 6.68 hours and SD(X) = 1.26 hours. Question 1....
show work please
Problem 2: Use the following to answer questions a)-e): A random sample of 48 students at a large university reported getting an average of 7 hours of sleep on weeknights, with standard deviation 1.62 hours. A dotplot of the data is provided. 9.6 Weekniaht Sleep a. Briefly explain why it is reasonable to use a t-distribution to perform inference about the mean amount of weeknight sleep for students at this university. (2 points) The research question: It...
shoe work please
Problem 2: Use the following to answer questions a) – e): A random sample of 48 students at a large university reported getting an average of 7 hours of sleep on weeknights, with standard deviation 1.62 hours. A dotplot of the data is provided. 0 4.8 5.6 8.8 9.6 6.4 7.2 8.0 Weeknight Sleep a. Briefly explain why it is reasonable to use a t-distribution to perform inference about the mean amount of weeknight sleep for students...
Hours of Sleep during Fall Semester
5.3
5.4
6.4
8.3
5.8
7.5
4.7
6.8
5.9
5.7
6.7
6.6
7.6
6.8
7.3
4.6
6.4
5.8
6.8
4.3
9.3
5.2
8.1
7.1
7.4
7.4
7.4
5.3
5.5
8.3
6.1
7.8
5.5
6.1
7.7
6.5
6.4
4.2
5.2
6.8
7.7
5.5
5.3
4.6
6.4
4.9
7
4.9
5.8
5.7
The Director of the Wellness Center is concerned that the number of hours of sleep that students who livc in thc dorms arc gctting...
QUESTION 3 "In interval estimation, as the sample size becomes larger, the interval estimate" becomes narrower. becomes wider. "remains the same, because the mean is not changing." gets closer to 1.96. ОО QUESTION 4 "A random sample of 16 students selected from the student body of a large university had an average age of 25 years and a standard deviation of 2 years. We want to determine if the average age of all the students at the university is significantly...
4. Suppose it is known that American adults sleep an average of 7.8 hours daily. You suspect that college students sleep less than this on average, so you collect a random sample of fifteen students at NCAT and get the following data on their typical daily sleep amount (in hours): 6.7 4.5 6.4 8.6 5.5 8.2 5.9 7.5 4.4 6.0 6.3 8.3 7.3 5.7 10.1 (a) Use this sample to see if there is sufficient evidence to conclude that the...
Please write answer and formula ON PAPER and please don’t
forget p value graph and calculator function and test statistic
.
Stat 50 Final Exam Last Name First Name In a survey of 267 senior high school students, 43.1% said that, on average, they had less than 6 hours sleep each day. Test the claim that, on average, in the population of all senior students, the majority have less than 6 hours sleep each day. 9, Claim: Но: Ha: Random...
More than 100 million people around the world are not getting enough sleep; the average adult needs between 7.5 and 8 hours of sleep per night. College students are particularly at risk of not getting enough shut-eye. A recent survey of several thousand college students indicated that the total hours of sleep time per night, denoted by the random variable X, can be approximated by a normal model with E(X) 6.9 hours and SD(X)-1.2 hours. Question 1. Find the probability...
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