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!
A professor is interested in whether there is a difference in counseling students' statistics competency scores among 1) those who have never taken any statistics course, 2) those who have only taken an undergraduate statistics course, 3) those who have taken COUN 503, and 4) those who have taken an advanced statistic course while working on a Ph. D. The professor gathers information from a random sample of students and obtains the statistics competency scores. The scores are normally distributed.
1)
2)
3)
4)
7
11
13
15
6
14
8
10
5
12
4
a. What statistical test should be used to analyze these data?
b. Identify H0 and Ha for this study.
c. Conduct the appropriate analysis.
d. Should H0 be rejected? What should the researcher conclude?
Decrease your sales price by $5 in order to increase sales by 5,000 units. Which of the above alternatives would your choose to increase profits?
Their resting heart rates were measured. A partial ANOVA table is given.
If individual luggage weights are independent, normally distributed rv's, what is the probability that total luggage weight is at most 2500 lb?
For each condition, 5 observations were collected (as provided). Show the final ANOVA table and interpret the 3 F ratios in terms of null/alternative hypotheses.
Suppose a sample of 35 surveys shows a sample mean of 17 minutes. Use = 4 minutes. Is the premium rate justified? Formulate the null and alternative hypotheses for this application.
A company tracked the number of complaints it received during the first 6 months of last year, as shown in the following table:
Whose characteristics can be assume to be independent of each other, were examined. Let X denotes the number of defective computer chips.
X is a normally distributed random variable with mean 10 and variance 24. a. Find P(X bigger 14) b. find P(8 smaller X smaller 20)
The second plane's speed is also normally distributed with mean and standard deviation 500and 10,respectively. What is the probability that plane 2 did not catch up to plane one after two hours of flight?
Of 880 respondents, 171 admitted that at least one light had been red. Follow four-step process to create 95% confidence interval.
Interview the officers of every fraternity at each of these 30 institutions. Is this a simple random sample, cluster random sample, or stratified random sample?
At the .01 significance level, is the mean grade of the women higher than that of the men? Set up the 5-step hypothesis testing procedure and solve.
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