Assignment-1 Question-1: Listed below is the net sales in $ million for home Depot‚ Inc. and its subsidiaries from 1997 to 2006. Table 1: Net sales of different years |Year |Net Sales ($) |Year |Net Sales ($) | |1997 |50‚600 |2002 | 156‚700 | |1998 |67‚300 |2003 |201‚400
Premium
Q1: What is the t-statistical used for? What is the P-value used for? What is the difference between the use of t-statistic and p-value? Ans: The t-statistic is a ratio of the departure of an estimated parameter from its notional value and its standard error. It is used in hypothesis testing. Let be an estimator of parameter β in some statistical model. Then a t-statistic for this parameter is any quantity of the form Where β0 is a non-random‚ known constant‚ and is the standard error of the
Premium Statistics Statistical hypothesis testing Statistical significance
What were long term and short term effects of WWII ? Were they good? Were they bad? When world war two had ended most of the world was in shock‚more than 50 million people had died. This had put an end to the put an end to the great depression‚ the economy began to bloom‚ put an end to strong empires and led to the cold war. I believe that wwii had a good long term effect on the Great Depression. The ending of the Great Depression had economic and cultural change on the American people. The
Premium Statistics Management Regression analysis
Results GWC program participation might contribute to STEM identity‚ but that effect might differ across GWC levels that indicate participants’ prior experience in computer science. Furthermore‚ the effect of program participation might differ across race as well. In order to measure the differences in STEM identity over time by GWC level and race‚ a 2X2x4 mixed design repeated measures ANOVA was conducted. Time was the within-subjects variable with two levels (pre and post). GWC level (beginner
Premium Statistical significance Statistics Statistical hypothesis testing
Question 1 10 out of 10 points The questions below refer to the following situation: In an Analysis of Variance with 4 groups‚ each containing 12 respondents: Calculate the within-group degrees of freedom. Selected Answer: 44 Correct Answer: 44 Question 2 10 out of 10 points In ANOVA‚ the dependent variable is measured at the nominal level. Selected Answer: False Correct Answer: False Question 3 0 out of 10 points The
Premium Null hypothesis Statistics Statistical hypothesis testing
[pic] CATEGORICAL DATA ANALYSIS STA 731 INDIVIDUAL ASSIGNMENT LECTURER’S NAME: PM DR ZAMALIA MAHMUD STUDENT’S NAME: NAWWAR AQILAH BINTI OMAR STUDENT’S ID: 2009528427 The table contains results of a study comparing radiation therapy with surgery in treating cancer of the larynx. | |Cancer Controlled |Cancer Not Controlled | | |Surgery |3 |5
Premium Statistical hypothesis testing Statistical significance Null hypothesis
7.2-3 Show that the running time of QUICKSORT is ‚.n2/ when the array A contains distinct elements and is sorted in decreasing order. QUICKSORT becomes T(n)=T(n-1)+∅(n) T(n)=T(n-1)+∅(┤) =T(n-2)+∅(n-1)+∅(n) =T(n-3)+∅(n-2)+∅(n-1)+∅(n) =∅(n)+∅∑_(k=1)^n▒k =∅(n^2) 7.2-5 Suppose that the splits at every level of quicksort are in the proportion 1˛ to ˛‚ where 0<˛ 1=2 is a constant. Show that the minimum depth of a leaf in the recursion tree is approximately lgn=lg˛ and the maximum depth is approximately
Premium Statistics Statistical hypothesis testing Algorithm
SPECIFICITY Compound Relative retention time Related sustances From individual solution From blend solution Varation H-GTBRC01 (0.15%) 0.65 0.65 0.00 H-GTBRC02 (0.15%) 0.80 0.80 0.00 H-GTBRC03 (0.15%) 0.43 0.43 0.00 Gefitinib (0.1%) 1.00 1.00 0.00 Observation: No interference was observed due to blank at the retention time of H-GTBRC01‚ H-GTBRC02‚ H-GTBRC03 . The order & relative retention time obtained from individual solution & blend solution were
Premium Statistics Statistical significance Statistical hypothesis testing
Infernum Imagine living in a society where you have zero individual rights‚ a place where you are unable to make any choices for yourself. Infernum is a small island off of Iceland‚ life is lonely and scary. The government oversees everything the civilians of Infernum and will give severe punishments to individuals who do not follow the strict laws. Infernum’s way of being successful has been instilling fear of disobeying and showing no mercy to a single soul. Violence has been how the government
Premium Statistics Scientific method Statistical significance
For this discussion‚ I thought I would look at any studies I could find regarding the diet “supplement” called Sensa. I’ve heard advertisements about it‚ but I didn’t know what it was. At first I thought it was a drug‚ which is why I selected it for this discussion posting. After further reading‚ I found it would be classified more as a supplement or food item; however‚ what I learned was so interesting I continued with the subject for this posting. I learned that it is a “flavor enhancer” that
Premium Statistical significance Scientific method Peer review