Yes, it is significant because as indicated by the asterisk, p <0.05 is the least acceptable value for statistical significance. 3. Which t ratio listed in Table 3 represents the smallest relative difference between the pretest and 3 months? Is this t ratio statistically significant? What does this result mean?
Although the data are slightly right skewed, because of the large sample size(n=152) our inference on the mean is valid, by the Central Limit Therom. The Box Cox plot suggests a power transformation using a power, p= -0.5 would make the data more shaped like a normal distribution. The Normal Q-Q plot shows the transformed data points lying close to the straight line and the box plot of the transformed data looks symmetric with two outliers. The numerical summary of the transformed data confirms that the transformed data are symmetric (mean=1 and median=1). A Shapiro-Wilk test on the transformed data provides no evidence against the transformed data having come fro a normal distribution (P-value=0.4286).
Provide a rationale for your answer. The mental health t ratio of t = -3.15 ratio indicates the largest difference between the males and females post MI in this study. This t ratio is significant since it is causing the p value to be significantly low, less than the alpha 0.05 set for the study. 5. Consider t = −2.50 and t = −2.54.
Some of you went into more detail here. To the extent those details overlapped with (b), I counted them as part of the (b) answer According to Exhibit 7a, Samsung’s costs per (256MBit equivalent) unit are lower by $1.39, or 24.4%, than those of its average competitor. They are lower by 10% than SMIC’s costs, which is Samsung’s lowest-cost competitor. An indirect way to tell that Samsung has a benefit advantage is by its ability to charge higher prices than its competitors. According to Exhibit 7a, Samsung’s prices per chip are on average higher by $0.72 than those of its competitors, or by 14.5%.
BUS497ABH Spring 09 Chapter 2 Review Questions | | | | |There is only ONE correct answer for each question. | True/False: 1. The power of suppliers will be enhanced if they are able to maintain a credible threat of forward integration. 2. Buyer power tends to be higher if suppliers provide undifferentiated or standard products.
Explain the difference in these two readings. 8. In the legend beneath Figure 2, the authors give an equation indicating that diastolic blood pressure is DBP = 25.8 + 0.13x. If the value of x is postnatal age of 30 hours, what is the value for Yˆ for neonates ≤ 1,000 grams? Show your calculations.
In FY 2010 VA’s ranking dropped from 16 to 23 out of 28 of the large Federal agencies. Principle corrective strategies should focus on improving communications, education, and competencies on EEO and diversity issues” (Message from the Secretary of Veterans Affairs (2010). “High volume of discrimination complaints: The per capita filing rate at the informal stage remained steady at 1.46 percent from FY 2009 to FY 2010 (slightly higher than the government-wide average of 1.39 percent); and the formal filing rate decreased from .76 percent to 0.72 percent (still higher than the government-wide average is of 0.60 percent). While the Department has made some progress in the last couple of years, continued work is needed to reach the government-wide levels. VA experienced an increase in findings of discrimination for FY 2010 (22 in FY 2009 versus 33 in FY 2010).
Others examples from the study social readjustment rating scale (SRRS), divorce 73, redundancy 47, beginning school and a holiday being 13. However the positives of this study is that people could learn beforehand how stressful an event will be before doing it. Another positive is that over 300 people did the study, which increases the study reliability. On the other hand there is criticism to the SRRS. One of them being that there is no allowance for individual differences, in divorce, one partner is usually happier about it than the other, although both would be given the same score on the scale.
The confidence interval for the first group mean is thus (4.1, 13.9). Similarly for the second group, the confidence interval for the mean is (12.1, 21.9). Notice that the two intervals overlap. However, the t-statistic for comparing two means is: t= 17 − 9 2.5 2 + 2.5 2 = 2.26 which reflects that the null hypothesis, that the means of the two groups are the same, should be rejected at the α = 0.05 level. To verify the above conclusion, consider the 95 percent confidence interval for the difference between the two group means: (17 − 9 ) ± 1.96 × 2.5 2 + 2.5 2 which yields (1.09, 14.91).
The 2012 net income of $44.88B reported showed a 9.30% growth of $3.82B compared to the $41.06B in net income reported in 2011 (ExxonMobil Corporation, 2013). While the amount of growth is substantial when standing alone, it was modest when comparing the 2010 and 2011 reporting periods. That time frame saw a 34.80% growth which equaled $10.60B (ExxonMobil Corporation, 2012). When considering ExxonMobil’s cash flow, one finds that cash flow for 2012 was a negative $3.08B. The company’s cash and cash equivalents started the year with $12.66B and ended with $9.58B, a 24.83% drop during the year.