Already have an account? Get multiple benefits of using own account!
Login in your account..!
Remember me
Don't have an account? Create your account in less than a minutes,
Forgot password? how can I recover my password now!
Enter right registered email to receive password!
1. 1,600 of 2,000 voters say they plan to vote Republican. Use 0.95 degree of confidence to find the popltn proportion interval.
A. 69.2 to 86.4%
B. 76.5 to 83.5%
C. 77.7 to 82.3%
D. 78.2 to 81.8%
E. none of the above
2. The mean weight of trucks traveling on the the highway is unknown. A state highway inspector needs an estimated mean. He selects 49 trucks passing the weighing station and gets a mean of 15.8 tons, w/ standard deviation of the sample of 3.8 tons. Using the 0.95 degree of confidence, what is the confidence interval w/in which the population mean lies?
A. 14.7 and 16.9
B. 13.2 and 17.6
C. 10.3 and 20.4
D. 16.1 and 18.1
The time needed for college students to complete a certain paper-and-pencil maze follows a Normal distribution, with a mean of 70 seconds and a standard deviation of 15 seconds.
A market analyst for the Weber Refrigerator Company has visited various appliance stores in a city to get data on the selling price of different brands of refrigerators. Estimate the population regression equation and interpret the result
According to an Internet posting, 80% of adults enjoy drinking beer. If a group of 3 adults is selected at random, find the probability that none of them enjoy drinking beer.
To determine whether there is a difference in the proportion of viewers watching the three channels.
A scatter plot and regression line can be used for all of the following EXCEPT
In other words, both variables have the same mean but different standard deviations. Draw rough sketches of the two normal curves on the same graph.
Conduct a hypothesis test using the .04 level of significance to determine if there is a difference between the population means.
1) What is correlation? 2) What is an example of two variables that are likely to be correlated because they are both changing over time?
A random-effects ANOVA refers to the analysis where the levels included in the study represent a random sample of all levels that exist.
From a random sample we know that the average duration of unemployment in a low developed region A is 147 days (with standard deviation sA = 32 days and nA = 230 unemployed).
Using a level of significance of .10, is there evidence that the population mean weight of the candy bars is greater than 7.3? Fully explain your answer.
Discuss three measures of central tendency for the dependent variable. Is this distribution skewed? If so, in what direction? Explain your answer. Why would you NOT attempt to determine the central tendency of the independent variables?
Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!
whatsapp: +1-415-670-9521
Phone: +1-415-670-9521
Email: [email protected]
All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd