6. D,=- D, = %3D 3 Class Intervals 20-24 25-29 8 30-34 8 35-39 11 40-44 8. 45-49 7 50-54 3.
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- Suppose an interval has frequency f . If the class interval with the lowest value is at the lowest row, then _________ is the sum of frequency f and all frequencies below it. greater than cumulative frequency Relative frequency less than cumulative frequency class markIf the Upper-class boundary and class interval are 299 and 100 respectively then what will be the lower-class boundary______We wish to demonstrate that the average time to graduate from college is affected by the students having taken AP calculus in high school. Specifically we wish to demonstrate that students who have taken AP calculus in high school gradate an average of at most 0.25 years sooner than students who have not taken AP calculus in high school. If we let μ1 demote the average time to graduate for students who have not taken AP calculus and μ2 denote the average time to graduate for students who have taken AP calculus, then select the appropriate alternative hypothesis: a. μ1-μ2 = 0 b. μ1-μ2-0.25 < 0 c. μ1-μ2-0.25>0 Please explain
- 17 first drop down- more than 5% points apart or within 5% points of eachother second drop down- less than, about the same, more thanA new drug is released to market and it has been determined that the drug is responsible for causing hypertension among those individuals who take the drug if 30276 individuals were prescribed the drug in its 1st year on the market and 17620 individuals developed hypertension what is the point prevalence of hypertension among those individuals described the drug after the drugs 1st year on the marketWe wish to demonstrate that the average time to graduate from Tulane is affected by the students having taken AP calculus in high school. Specially, we wish to demonstrate that students who have taken AP calculus in high school graduate an average of more than 0.25 years sooner than students who have not taken AP calculus in high school. If we let denote the average time to graduate for students who have not taken AP calculus and denotes the average time to graduate for students who have taken AP calculus, then select the appropriate alternative hypothesis.
- can you use sturge's formula to calculate the class interval?A certain factory operates three different shifts. Over the last year, 200 accidents have occurred at the factory. Some of these can be attributed at least in part to unsafe working conditions, whereas the others are unrelated to working conditions. The accompanying table gives the percentage of accidents falling in each type of accident-shift category. Unsafe Conditions Unrelated to Conditions ---------------------------------------------------------------------------------- Day 10% 35% Shift Swing 8% 20% Night 5% 22% ------------------------------------------------------------------------------- Suppose one of the 200 accident reports is randomly selectedf from a file of reports, and the shift and type of accident…The manager of human resource department wants to see if there is anyrelationship between staffs’ salary (in 1000TK) and their experience (in years).---------------------------+| id salary experience ||--------------------------|| 1 15 15.5 || 2 18 17 || 3 16.5 17 || 4 16.3 18 || 5 22 19 ||--------------------------|| 6 19.9 18 || 7 24 20 || 8 18.5 18.5 || 9 28.3 22 || 10 17.5 19.5 ||--------------------------|| 11 24.5 19.5 || 12 16.2 17.5 |---------------------------------(a) Write down the regression model of salary on experience indicating dependentvariable, independent variables and the associated parameters.(b) Obtain the least squares estimates of the model parameters and interpret them.(c) Draw a scatter plot and the regression line in the same coordinate.(d) Obtain TSS, RSS and ESS.(e) Obtain R-square value and interpret the result.(f) Obtain the estimate of the error variance.(g) Obtain 95% confidence interval for slope and interpret it.(h) Test the hypothesis that there is…
- We wish to demonstrate that the average time to graduate from school is afected by the students who have taken AP calculus in hgh school. Specially, we wish to demonstrate the students who have taken AP calculus in high school graduate an average of more than .25 years sooner than students who have not taken AP calculus in high school. If we let μ1 denote the average time to graduate for students who have not taken AP calculus and μ2 dentoe the average time to graduate for students who have taken AP calculus, what is the apropriate null hypothesisHow do you find the intervals that are concave up or down, the inflection point, the critical points, and the local max and min of problem 53? Thanks!Suppose that 95% of the bags of certain fertilizer mix weigh between 49 and 53 pounds. Averages of three succesive bags were plotted, and 47.5% of these were observed to lie between 51 and X pounds. Estimate the value of X. State assumptions you make and say whether these assumptions are likely to be true for this example.