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Equation of the regression line.
Using the age and sick days data :
Age ( X)
18
26
39
48
53
58
Sick Days(Y)
16
12
9
5
6
2
a) Find the equation of the regression line.
b) Find y' when x=47 years.
Compute standard error of mean? Compute the margin of error, with 95% confidence.
Convert each of the following z intervals to raw score x intervals:
Can we conclude that mean time for game is less than 3.50 hours? Use.05 significance level.
Compute mean x and standard deviation s of data above. Calculate Ho by using traditional/classical method.
Number of miles flown in a One- year period by the sample of "frequent flyers" was recorded. Is this a grouped or an ungrouped frequency distribution?
The lengths of pins produced by a machine follow a normal distribution with mean 2.54 cm and standard derivation 0.04 cm.
Hagger Engineering Corporation is considering undertaking several proposed projects for the next fiscal year. The projects, the number of engineers and the number of support personnel necessary for each project.
If gambler rolls two dice and gets sum of four, he wins $10; and if he gets sum of three, he wins $25. Cost to play game is $5. What is expectation of this game?
What is the probability that two of absent students were girls.What is the probability that two of absent students were boys.
Using an alpha level of 0.05, please use SPSS to perform a one-way ANOVA and then determine whether the data below provide evidence for Theory A, Theory B, or Theory C. In other words, is one theory stronger than the others?
See if there is a difference in their means and variances.
Report the t-value, whether you accept or reject Ho, and whether the difference was significant in a brief sentence.
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