When interpreting F_(2,57) = 10.80,p < 0.01,what is the within-groups df?

A) 60
B) 57
C) 3
D) 2

If the obtained value in a dependent-samples t test exceeds the critical value,the null hypothesis must be accepted.

Twenty students are given an attitude test before and after viewing a motion picture designed to change their attitudes favorably toward a new curriculum. A high score indicates a favorable attitude and a low score indicates an unfavorable attitude, with the scores ranging from 1 to 30. This problem will use the sign test on the data given below to see if we can conclude the motion picture was successful in improving attitudes. Describe what the test statistic is for the sign test.
________________________________________________________
What is the value of the test statistic in this problem?
______________
Is this a one-tailed test or a two-tailed test?
______________
Find the rejection region for = 0.10.
Reject when T > ______________
Using as above, can we conclude the motion picture was successful in changing attitudes?
______________
Conclusion: The motion picture was ______________ in changing attitudes.
At what level of significance could we reject H₀?
______________

The Holt-Winters multiplicative model is based on the equation ________.

A) F_{t + 1} = a_t (b_t + S_{t - s - 2})
B) F_{t + 1} = a_t (b_t + S_{t - s + 1})
C) F_{t + 1} = (a_t + b_t) S_{t - s + 1}
D) F_{t + 1} = (a_t + b_{t -1}) S_{t - 2}

George Fuji bought 400 shares of TTV stock at $28. He sold the stock at $34. Commission charges were $0.20 per share. Compute the dollar amount of gain or loss.​

What amount on January 23 is equivalent to $1,000 on the preceding August 18 if money can earn 6.5%?