Reference no: EM131008553
1. Which of the following statements are true? If false, explain briefly.
a) Using an alpha level of 0.05, a P-value of 0.04 results in rejecting the null hypothesis.
b) The alpha level depends on the sample size.
c) With an alpha level of 0.01, a P-value of 0.10 results in rejecting the null hypothesis.
d) Using an alpha level of 0.05, a P-value of 0.06 means the null hypothesis is true.
2. Which of the following statements are true? If false, explain briefly.
a) It is better to use an alpha level of 0.05 than an alpha level of 0.01.
b) If we use an alpha level of 0.01, then a P-value of 0.001 is statistically significant.
c) If we use an alpha level of 0.01, then we reject the null hypothesis if the P-value is 0.001.
d) If the P-value is 0.01, we reject the null hypothesis for any alpha level greater than 0.01.
|
The rockwell corporation uses a periodic inventory system
: In the 2011-2009 comparative financial statements, what will be the amounts of cost of goods sold and inventory reported for 2011?
|
|
Standard error and standard deviation of sample proportion
: a) Construct a 90% confidence interval for p. b) Based on the confidence interval, at a = .05 can you reject H0? Explain. c) What is the difference between the standard error and standard deviation of the sample proportion? d) Which is used in comput..
|
|
Construct a p chart of the percentage of late flights
: One of New English Air's top competitive priorities is on-time arrivals. Quality VP Clair Bond decided to personally monitor New England Air's performance. Each week for the past 30 weeks, Construct a P Chart of the percentage of late flights
|
|
Prepare the journal entry at the beginning of 2011
: In the 2011-2010 comparative income statements, what will be the amounts of net income reported for 2010 and 2011?
|
|
Alpha level depends on the sample size
: 1. Which of the following statements are true? If false, explain briefly. a) Using an alpha level of 0.05, a P-value of 0.04 results in rejecting the null hypothesis. b) The alpha level depends on the sample size.
|
|
Construct x-bar and r charts based on the data
: Construct X-bar and R charts based on the data of the first 25 hours. Comment on whether the process is in control
|
|
What is the null hypothesis
: The owner of the store from Chapter 12, Exercise 1, wants to know if the mean age of all customers is 25 years old. a) What is the null hypothesis? b) Is the alternative one- or two-sided?
|
|
Faulkner decided to change to the straight line method
: Describe the way Faulkner should account for the change described. Include in your answer any journal entry Faulkner will record in 2011 related to the change and any required footnote disclosures.
|
|
Computer model had warranty problems
: For each of the following, write out the alternative hypothesis, being sure to indicate whether it is one-sided or two-sided. a) Consumer Reports discovered that 20% of a certain computer model had warranty problems over the first three months. ..
|