Question
C3 Q5 V4: The survey data STATISTICSSTUDENTSSURVEYFORR contains the column WKHRSNEWS (a variable that measures the hours per week a student reads the news) and
C3 Q5 V4: The survey data STATISTICSSTUDENTSSURVEYFORR contains the column WKHRSNEWS (a variable that measures the hours per week a student reads the news) and the column JTGOOD (a variable that answers yes or not to whether the student thinks Justin Trudeau is doing a good job. Use R to find the mean and standard deviation for the weekly hours per news for the yes students and the mean and standard deviation for the weekly hours for news for the no students. Choose the most correct answer below.
The yes mean is more than the no mean and the yes standard deviation is more than the no standard deviation.
The yes mean is more than the no mean and the yes standard deviation is less than the no standard deviation.
The yes mean is less than the no mean and the yes standard deviation is less than the no standard deviation.
The yes mean is less than the no mean and the yes standard deviation is more than the no standard deviation.
2.Randomly collected student data in the dataset STATISTICSSTUDENTSSURVEYFORR contains the columns ALBBEST (preferred Alberta party (Green, Liberals, NDP, or UCP) ) and UNDERGORGRAD (degree being sought (GraduateProfessional, Undergraduate) ). Make a crosstab table of the counts for each of the (UNDERGORGRAD , ALBBEST) pairs. The probability that a student prefers the Alberta NDP party as best and is pursuing a graduateprofessional degree is [a]. ROUND THE ANSWER TO 3 DECIMAL PLACES
3.At a certain University, the chance of astudent receiving financial aid is 63%. 15 students are randomly and independently chosen. The probaility that at most 10 of them are receiving financial aid is [a]. ROUND YOURANSWERTO3DECIMALS.
4.A tire company makes tires that have a normal distribution with a mean of 65,000 miles with a standard deviation of 3000 miles prior to needing replacement. Find the probability that a tire lasts between 60,500 to 69,500 miles. CARRY ALL DECIMALS IN YOUR WORK BUT ROUND THE FINAL ANSWER TO 3 DECIMALS.
5.A tire company makes tires that have a normal distribution with a mean of 65,000 miles and a standard deviation of 3000 miles prior to needing replacement. A tire that wears out after reaching the top 3% of miles lasted before needing replacement is considered very well made. Find the lowest number of miles that a tire would have to last to be considered very well made. CARRY ALL DECIMALS IN YOUR WORK BUT ROUND THE FINAL ANSWER TO 2 DECIMALS.
Step by Step Solution
There are 3 Steps involved in it
Step: 1
Get Instant Access to Expert-Tailored Solutions
See step-by-step solutions with expert insights and AI powered tools for academic success
Step: 2
Step: 3
Ace Your Homework with AI
Get the answers you need in no time with our AI-driven, step-by-step assistance
Get Started