Homework Answers
Solution:
Option (1) is correct.
Descriptive Statistics
Reason:
In this example, given that 30% of the students are IT majors. This is an example of descriptive statistics.
Because it is used to describe the basic feature of the data.
Option (1) is 100% correct.
Thank you!!
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Question 21 3 points Save Answer In a sample of 400 students in a university, 120,...
Question 3 2 pts Based on past experience, it is predicted that 31% of registered voters in Oklahoma will vote in the next primary. The 31% would be considered an example of: Homework Help: 1DA P...
Question 3 2 pts Based on past experience, it is predicted that 31% of registered voters in Oklahoma will vote in the next primary. The 31% would be considered an example of: Homework Help: 1DA Population/parameterisample/statistic/inferentialidescriptive e (DOCX) O Descriptive statistics O Inferential statistics O A sample O Qualitative data
Question 3 2 pts Based on past experience, it is predicted that 31% of registered voters in Oklahoma will vote in the next primary. The 31% would be considered an...
Question 29 (3 points) Imagine you are conducting a study and the University of Arizona study...
Question 29 (3 points) Imagine you are conducting a study and the University of Arizona study body is the population to which you want to generalize. You obtain a Registrar's list and are trying to decide which sampling procedure to conduct. Match the following terms and the descriptions of sampling procedures for your study. You conduct a two-stage sampling process. First you randomly sample college majors at UA. Then you sample students within the chosen majors. You randomly-order the Registrar's...
question 44-48 Use the given frequency distribution to find the (a) class width. (b) class midpoints...
question 44-48
Use the given frequency distribution to find the (a) class width. (b) class midpoints of the first class. (c) class boundaries of the first class. 44) Miles (per day) Class Frequency,f 1-2 44) 3- 4 5- 6 28 15 9-10 A) (a) 2 (b) 1 (c) 1-2 B) (a) 1 (b) 1 (c) 1-2 C) (a) 1 (b) 15 (c) 0.5-25 D) (a) 2 (c) 0.5-2.5 Determine whether you would take a census or use a sampling. If...
Question 5 5 points Save Answer Suppose that a random sample of 50 students in grade...
Question 5 5 points Save Answer Suppose that a random sample of 50 students in grade sex wes taken and the confidence interval corresponding to their mean height in inches) was found the chance interval was calculated to be 35.648, with a known population standard deviation of 26 xches What is the confidence level (as a percentage) corresponding to this confidence interval? Activate Windows Question 5 of 8 Corto Seguro de Window Moving to the next question prevent changes to...
QUESTION 34 4 points Save Answer A sample of size 45 will be drawn from a...
QUESTION 34 4 points Save Answer A sample of size 45 will be drawn from a population with mean 94 and standard deviation 14. Find the 32nd percentile of the sample mean . 98.48 94.67 87.42 93.02 QUESTION 35 4 points Save Answer Construct a 95% confidence interval for the unknown population proportion, based on the given values of x and n: x= 78, n= 142 and fill in the blanks. We are confident that the population mean is between...
Part 1 of 1 - Question 4 of 21 5 Points A random sample of 100...
Part 1 of 1 - Question 4 of 21 5 Points A random sample of 100 students at Boston University was asked their opinion on how good the food is in the school cafeterias. 40 of the students liked the food, and 60 did not. Find a 95% confidence interval for the true proportion of students who like the food?
QUESTION 21 Independent random samples taken on two university campuses revealed the following information concerning the...
QUESTION 21 Independent random samples taken on two university campuses revealed the following information concerning the average amount of money spent on non-textbook purchases at the university's bookstore during the fall semester University AUniversityB Sample Size Average Purchase Population Standard Deviation(o) 49 $260 $19 39 $250 $27 We want to determine if, on the average, students at University A spent more on non-textbook purchases at the university's bookstore than the students at University B What is the test statistic? Please...
DerReleycollege.instructure.com Quiz Instructions D Question 1 1 pts Randomly selected 50 people from New York City...
DerReleycollege.instructure.com Quiz Instructions D Question 1 1 pts Randomly selected 50 people from New York City were asked if they use a subway to get to the work place. 40 said "Yes". Based on this sample data was made a statement that 80% of the whole population of New York City take subway to get to the work place. Does this statement represent descriptive or inferential statistics? O descriptive O inferential 5:00 PM 11% a berkeleycollege.instructure.com D Question 2 1...
Question 18 4 points Save Answer A famous car company is trying to test whether there...
Question 18 4 points Save Answer A famous car company is trying to test whether there is a difference in the average popularity customer rating for new car models A and B. What test should this company use to provide for the manufactory based on the above information? ANOVA Two samples test o O One sample test ttest of a population proportion
Moving to another question will save this response. · Question 3 2 points Save Ans The...
Moving to another question will save this response. · Question 3 2 points Save Ans The mean television viewing time for Americans is 20 hours per week. Suppose a sample of 30 Americans is taken to further investigate viewing habits Assume the population standard deviation for weekly viewing time is o- 4 hours What is the probability that the sample mean will be within 1 hour of the population mean? 0.4687 0.9784 。0.9147 0.8294
Question 3 2 pts Based on past experience, it is predicted that 31% of registered voters in Oklahoma will vote in the next primary. The 31% would be considered an example of: Homework Help: 1DA Population/parameterisample/statistic/inferentialidescriptive e (DOCX) O Descriptive statistics O Inferential statistics O A sample O Qualitative data
Question 3 2 pts Based on past experience, it is predicted that 31% of registered voters in Oklahoma will vote in the next primary. The 31% would be considered an...
Question 29 (3 points) Imagine you are conducting a study and the University of Arizona study body is the population to which you want to generalize. You obtain a Registrar's list and are trying to decide which sampling procedure to conduct. Match the following terms and the descriptions of sampling procedures for your study. You conduct a two-stage sampling process. First you randomly sample college majors at UA. Then you sample students within the chosen majors. You randomly-order the Registrar's...
question 44-48
Use the given frequency distribution to find the (a) class width. (b) class midpoints of the first class. (c) class boundaries of the first class. 44) Miles (per day) Class Frequency,f 1-2 44) 3- 4 5- 6 28 15 9-10 A) (a) 2 (b) 1 (c) 1-2 B) (a) 1 (b) 1 (c) 1-2 C) (a) 1 (b) 15 (c) 0.5-25 D) (a) 2 (c) 0.5-2.5 Determine whether you would take a census or use a sampling. If...
Question 5 5 points Save Answer Suppose that a random sample of 50 students in grade sex wes taken and the confidence interval corresponding to their mean height in inches) was found the chance interval was calculated to be 35.648, with a known population standard deviation of 26 xches What is the confidence level (as a percentage) corresponding to this confidence interval? Activate Windows Question 5 of 8 Corto Seguro de Window Moving to the next question prevent changes to...
QUESTION 34 4 points Save Answer A sample of size 45 will be drawn from a population with mean 94 and standard deviation 14. Find the 32nd percentile of the sample mean . 98.48 94.67 87.42 93.02 QUESTION 35 4 points Save Answer Construct a 95% confidence interval for the unknown population proportion, based on the given values of x and n: x= 78, n= 142 and fill in the blanks. We are confident that the population mean is between...
Part 1 of 1 - Question 4 of 21 5 Points A random sample of 100 students at Boston University was asked their opinion on how good the food is in the school cafeterias. 40 of the students liked the food, and 60 did not. Find a 95% confidence interval for the true proportion of students who like the food?
QUESTION 21 Independent random samples taken on two university campuses revealed the following information concerning the average amount of money spent on non-textbook purchases at the university's bookstore during the fall semester University AUniversityB Sample Size Average Purchase Population Standard Deviation(o) 49 $260 $19 39 $250 $27 We want to determine if, on the average, students at University A spent more on non-textbook purchases at the university's bookstore than the students at University B What is the test statistic? Please...
DerReleycollege.instructure.com Quiz Instructions D Question 1 1 pts Randomly selected 50 people from New York City were asked if they use a subway to get to the work place. 40 said "Yes". Based on this sample data was made a statement that 80% of the whole population of New York City take subway to get to the work place. Does this statement represent descriptive or inferential statistics? O descriptive O inferential 5:00 PM 11% a berkeleycollege.instructure.com D Question 2 1...
Question 18 4 points Save Answer A famous car company is trying to test whether there is a difference in the average popularity customer rating for new car models A and B. What test should this company use to provide for the manufactory based on the above information? ANOVA Two samples test o O One sample test ttest of a population proportion
Moving to another question will save this response. · Question 3 2 points Save Ans The mean television viewing time for Americans is 20 hours per week. Suppose a sample of 30 Americans is taken to further investigate viewing habits Assume the population standard deviation for weekly viewing time is o- 4 hours What is the probability that the sample mean will be within 1 hour of the population mean? 0.4687 0.9784 。0.9147 0.8294
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