To view the research on a nominal scale, the research data can be drawn from the type of class. The word nominal is derived from the root word in Latin for name (Usable Stats, 2013). The name of the class, Psychological Statistics, is the nominal measurement for this research. When conducting this study, the study will only be measured during the course of this specific class. The results could drastically change when considering another type of class such as Quantitative Literacy as the cognitive understanding of such a collegic math class may be more optimal through a different course-delivery format.
The information in the table below refers to the 2008 model year product line of BMW automobiles. Identify the Individuals, variables, and data corresponding to the variables in the table below. Determine whether each variable is qualitative, continuous, or, discrete. Please refer to problems #51 and #53 on page 13 for examples.
Assuming unequal variances, the two sampled t-Test was applied on the data sets of female and male shoe sizes with the alpha value of 0.05. The null hypothesis was that the female and male shoe sizes have an equal mean while the alternative hypothesis was that female and male shoe sizes do not have an equal mean. With the degrees of freedom being 27, the t-statistic is -8.16. The probability that -8.16 is ≤ -1.70 is 4.5×10-9 for the one-tailed test. Also, the probability that -8.16 is ≤ ±2.05. is 9.1×10-9 for the two-tailed test. Given that both probabilities are under the alpha value of 0.05, the null hypothesis is therefore rejected, and the alternative hypothesis is accepted at the 95% confidence level.
Answer: A19. Which of the following statements are correct?A) For a given level of significance, the critical value of Student's t increases as n increases.
2. At 95% confidence, use the p-value approach and test to determine if the average yearly income of marketing managers in the East is significantly different from the West.
A sample of 54 day-shift workers showed that the mean number of units produced was 345, with a standard deviation of 21. A sample of 60 afternoon-shift workers showed that the mean number of units produced was 351, with a standard deviation of 28 units. At the .05 significance level, is the number of units produced on the afternoon shift larger?
the correlation is 0.668; the equation of regression is CREDITS=11.7475*AGE-174.356; the slope is 11.7475 which is positive; when the predictor variable AGE increase, the response variable CREDITS also strongly increase; for instance, when AGE increase by 1, the CREDITS will increase 11.7475. There are some outliers may affect the correlation. Based on the graphs and data above, we can find out a student who is older with a litter lower GPA, but has very higher credits; the student with higher credits also has high GPA.
How much do we really know about our country, our district, or even our hometown? Are statistics really what people think? According to Alan Smith, an inaugural recipient of the Royal Statistical Society's Award for Excellence in Official Statistics, what people think is always extremely different than what the real statistic truly is. In his Ted Talk, entitled “Why We Should Love Statistics”, he discusses his study of statistics which opened up a whole new vision of the subject for me. Before watching this Ted Talk, statistics was simply a more relatable math class. After watching, I see now that statistics is also a method to connect people within communities. In fact, while statistics is a field that involves entirely numbers, it should
Here P value is (0.695/2)= 0.3475 which is grater than significance level 0.01. If α> P value reject, do not reject otherwise, here 0.3475 ( P value) is grater than significance level, so do not reject. That means we can conclude that there is not enough evidence to claim that, the mean selling price in the Gulshan area is more than