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!
Hypothesis Testing.
1. Annual per capita consumption of milk is 21.6 gallons (Statistical Abstract of the United States: 2010). A sample of 18 individuals from the Midwestern town of Webster City showed a sample mean annual consumption of 23.5 gallons with a sample standard deviation s = 4.5. Develop a hypothesis test that can be used to determine whether the mean annual consumption in Webster City is higher than the national mean. α = 0.05.
a) The hypotheses, using correct notation:
b) The rejection rule, citing the critical value of the test statistic.
c) Show the calculation of the test statistic.
d) The rejection decision and why.
e) In a complete sentence, give your conclusion about the issue in question.
The sample mean and sample standard deviation of these measurements were (in degrees centigrade) 330.2 and 15.4, respectively. Construct a 95 percent confidence interval estimate of the true melting point of lead
What is the point estimate of the population? For this situation suppose that only 49% of the registered voters in the sample favor the candidate over her strongest opponent. Given this result:
The F-test for interaction was omitted from the article. Discuss the dangers of making inferences based on the tests, parts a and b, without knowing the result of the interaction test.
The driving times are normally distributed with a mean of 35 minutes and a standard deviation of 8 minutes.
suppose that the number of accidents occurring on a certain highway at a rate of 3 per day. let a be the number of
Suppose that Xn ? Ge(pn), n = 1, and that X1, X2, ... are independent. State and prove the analog of the previous problem.
A large department store wants to test whether the variance of waiting time in two checkout counters is approximately equal.
What is the logic behind using the sum of the products of deviation scores as the numerator of the formula for the correlation coefficient? Is this logic sound? Why or why not?
Based on these results, is there significant difference between attitudes for males and for females? Use two tailed test with alpha = .05.
Determine the probability of fatal accident over a lifetime? Describe your reasoning carefully. Hint: Suppose independent events. Why might the supposition of independence be violated?
Assuming an initial forecast of 22,000 miles for week 1, use exponential smoothing with a = 0.3, 0.6, and 0.8 to forecast miles for weeks 2 through 12.
Explain what is meant by the following statement: ANCOVA offers post hoc statistical control. Provide an example
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