After you reject the Ho based on a significant F test, what should you Do? declare that all treatment means differ Declare that all treatment means are the same Apply mean separation procedures to determine which means were different
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After you reject the Ho based on a significant F test, what should you Do?
declare that all treatment means differ
Declare that all treatment means are the same
Apply
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- A sales manager believes that the mean number of days per year her company's sales representatives spend traveling is less than 50. A test is made of H0 u = 7 versus H1 u < 50. The null hypothesis is not rejected. State an appropriate conclusion.What is Ha? (H0 is the mean VIQ scores for the younger, middle-aged, and older subjects are all not different from each other) (Note: 1= 5-25 Years, 2= 26-59 Years, 3= 60-92 Years) Multiple Choices: 1. H0 is not true 2. The mean VIQ scores for the younger, middle-aged, and older subjects 3. are all different 4. The mean VIQ scores for the younger, middle-aged, and older subjects are all different from each other 5. The mean VIQ scores for the younger, middle-aged, and older subjects are not equal to one another 6. The mean VIQ scores for the younger, middle-aged, and older subjects are not the same as each otherWhat is Ha? (H0 is the mean VIQ scores for the younger, middle-aged, and older subjects are all not different from each other) (Note: 1= 5-25 Years, 2= 26-59 Years, 3= 60-92 Years) Multiple Choices: 1. H0 is not true 2. The mean VIQ scores for the younger, middle-aged, and older subjects 3. are all different 3. The mean VIQ scores for the younger, middle-aged, and older subjects are not equal to one another 4. The mean VIQ scores for the younger, middle-aged, and older subjects are not the same as each other
- When determining whether grounding accidents and hull failures result in different spillage (is there a difference between spills caused by grounding or hull failures) would I use a two tail t test to decide this?Let m denote the true average radioactivity level (picocuriesper liter). The value 5 pCi/L is considered the dividingline between safe and unsafe water. Would you recommendtesting H0: m 5 5 versus Ha: m . 5 or H0: m 5 5versus Ha: m , 5? Explain your reasoning. [Hint: Thinkabout the consequences of a type I and type II error foreach possibility.]for one week) and S hypertensive controls (received placebo for one week) were involved, chosen from Al-Hussein Teaching Hospital in 2010. The results below were revealed: Statistics Mean SBP 150 S.D Cases Controls |142 12 9 Find out whether the (drug used has a significant effect on the blood pressure level.
- Christopher wants to compare whether those that study before they go to bed or during the day perform better on an exam. What type of test would be appropriate to evaluate the results of his study? one-way ANOVA independent t-test dependent t-test one-sample t-testso what would the t test equal to?Select ALL that apply
- Before every flight, the pilot must verify that the total weight of the load is less than the maximum allowable load for the aircraft. The aircraft can carry 41 passengers, and a flight has fuel and baggage that allows for a total passenger load of 6 comma 724 lb. The pilot sees that the plane is full and all passengers are men. The aircraft will be overloaded if the mean weight of the passengers is greater than StartFraction 6 comma 724 l b Over 41 EndFraction equals 164 lb. What is the probability that the aircraft is overloaded? Should the pilot take any action to correct for an overloaded aircraft? Assume that weights of men are normally distributed with a mean of 179.8 lb and a standard deviation of 37.7 . The probability is approximately nothing .A psychologist would like to determine whether there is a relation between dexterity and video game play. It is known that the general population averages µ= 84 on a standardized dexterity test. The psychologist obtains a sample of N = 11 individuals who are all avid video game players (15+ hours per week). The dexterity scores for this sample are as follows: 96, 82, 91, 100, 98, 73, 92, 81, 85, 89, 89. On the basis of this sample, can the psychologist conclude that dexterity is significantly different from avid video game players than in the general population? Use a two-tailed test at the α = .05 level of significance. Be sure to show all formulas with symbols (and plug in numbers), steps, processes and calculations for all parts of all answers (including how you arrived at the critical value).Assume a study was conducted on the effectiveness of a class on "How to take tests." The SAT scores of an experimental group and a control group were compared. (There were 100 subjects in each group.) The mean score of the experimental group was 503 and the mean score of the control group was 499. The difference between means was found to be significant, p = .037. What do you conclude about the effectiveness of the class?