4)
with 95% confidence we can say that the population mean lies between 81.345 to 83.775
#4 please QUESTION 3 For this question we will analyze data from the most detailed, up-to-date...
QUESTION 3: For this question we will analyze data from the 2014 American Time Use Survey. The survey offers the most detailed, up-to-date portrait of how people in the United States spend their time it also offers some insight into how Americans exercise and eat. I have included all the information you need to answer this question without your needing to access the data yourself (although it is publicly available). The data are drawn from a sample of n= 11,592...
from prior experience we know time spent studying for an exam is approximately normally distributed.You survey HC students and ask the participating students how many times do they spend studying for the exam. From your sample of 36 HC students ,you obtained the mean time spent to study for an exam was 160 minutes,with standard deviation of 40 mins. 2)construct a 95% confidence interval for the mean study time (in minutes) of HC students.
1.)
2.)
3.)
4.)
5.)
An advertising executive wants to estimate the mean weekly amount of time consumers spend watching traditional television daily. Based on previous studies, the standard deviation is assumed to be 23 minutes. The executive wants to estimate, with 99% confidence, the mean weekly amount of time to within + 6 minutes. a. What sample size is needed? b. If 95% confidence is desired, how many consumers need to be selected? a. The sample size required for...
QUESTION 16 (B. 3/4) Answer the following questions using data from the Police-Public Contact Survey. Are there differences between time of day and how long a police- stop lasts? Sed. Error Group Statistics Was stop during the day or at night? N Day 84 Night 124 How many minutes did the stop last Mean 15.05 12.12 Sid Deviation 25.624 17.588 2.796 1.579 Independent Samples Test Levene's Test for Equality of Variances t-test for quality of Means S. 2 tailed .330...
QUESTION 17 (B. 4/4) Answer the following questions using data from the Police-Public Contact Survey. Are there differences between time of day and how long a police- stop lasts? Group Statistics Was stop during the day or at night? N Day 84 Night 124 Mean How many minutes did the stops Std Deviation 25.624 17.588 Sed. Error Mean 2.796 1.579 15.05 12.12 Independent Samples Test Levene's Test for Equality of Variances t-test for quality of Means Sig. - talled df...
3. True or False for each question
4. (Yes or No) because..
A) There are at least 10 successes and 10 failures in the
sample
B) There are at least 20 success and failures in the sample
C) The population has more 10 success and 10 failures
D) The 1,259 is not large enough for the central limit theorem
to apply
5. (Yes or No) because...
A) The confidence interval includes reasonable values for the
parameter that are below 50%...
n-Class Exercise 1 Instructions: Submit your work through Blackboard by the due date. Late submissions are not allowed. You can take photos of or scan your solutions Calculate or write the formulas for each test statistic and p-value for each hypothesis test question (questions 7-10). It is true you will never have to calculate these in real life, however, you should know what Megastat, or any other statistical software, is calculating. 1) According to an IRS study, it takes a...
question #24
313 7-1 Estimating a Population Proportion <p 174% sult from part (a)tothis 95% onfidence iterval for 5 subjects who she 45 sutycts given a placebo instead of OyContin: 1.93% < ρ a. developed y When she was 9 years of age, Emily Rosa did a science fair experimem sed professional souch therapists to see if they could sense her energy fieldhe be tn select either her right hand or her left hand, and then she asked the therapist...
Question 3 is the same as 10.19 below, they are just for reference.
Please do question 4.
please use R to do this question, provide R codes.
Questlon 3 (6 polnts total) The Storm Prediction Center of the National Ocesnic and Atmospheric Administration maintains a database of tornadoes, floods, and other weather phenomena. The fle "EX10-19TWISTER.CaV Includes the anmual mumber of tornadoes in the Untted States between 1953 and 2014. Use R to carry out the analysts and answer the...
Using the answers from the table above, answer ALL of
the questions below. For questions 1 - 13, draw a
normal curve and indicate the area that you are calculating the
probability of. For questions 14 – 22, use the
appropriate formulas and show all of your
calculations.
Be sure to turn in the table above along with your
answers to all of the questions below. Place your answers in a
folder with your name clearly written at the top...