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!
Your statistics teacher has repeatedly told class that more you study, the better you will do on tests. You make decision to verify this statement. You arbitarily choose 12 classmates and ask them how long they studied for last test and what grade they made. Here are the data:
Student Hours studied Grade1 17 912 12 733 8 704 14 865 10 716 3 627 20 878 11 769 7 6810 16 8411 9 6612 15 83
1. Use Hypothesis testing to compute te correlation between these two variables and these it for significance. Test at .01 level of significance.
a. Step 1: State Hypothesisb. Step 2: Set Criteriac. Step 3: Calculate Sample Statistici. Use excel to compute r valued. Step 4: Make a decisioni. Did you reject null/fail to reject nullii. Define your conclusions in your own words
2. Another classmate told you that she studied 25 hours. What would you forecast her score on test?a. Write the regression equation?b. Use regression equation to answer question
Calculate separately for 1983 and 1987, the 95% confidence interval for the proportion of students who had driven an automobile while drinking.
Which of the given is the example of a discrete random variable? Which of the given is an example of continuous random variable?
The results of a district spelling bee for both girls and boys are normally distributed. the 60 girls have a mean score of 71 with a standard deviation of 6, while the 50 boys have a mean score of 66 points with standard deviation of 5 points.
With a Rejection Region of 8, 9 or 10, what is the probability of a Type II error, if the job applicant has a probability of identifying the odd sample with p = 0.5?
Consider in you response how the concepts of a population (and its associated parameters) and the sample (and its associated estimates) fits into the discussion.
What is the probability that the cereal would be high calorie? In other words, what is P (high calorie)?
Be certain to mention the direction of the relationship, the strength of the relationship, and whether our findings are statistically significant
Find a 95% confidence interval for the proportion p of the inner-city, working-class group who eventually became alcoholics.
SAT verbal scores are normally distributed with a mean of 494 and a standard deviation of 97. Use the Empirical Rule to determine what percent of the scores lie between 300 and 591.
Describe in some detail how a hypothesis test could be used in some real world context such as business, politics, church, Girl Scouts, school, or perhaps your place of work.
A food snack manufacturer samples 7 bags of pretzels off the assembly line and weighs their contents. If the sample mean is 12.7 oz. and the sample standard deviation is 0.40 oz., find the 95% confidence interval of the true mean.
Testing for equality of variances - Independent random samples were taken from normal distributions of the yearly production of ships built by the International Ship Building Company under
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