The data below are the final exam scores of 10 randomly selected calculus students and the number of hours they slept the night before the exam. Hours(x)
4
6
3
9
3
5
5
6
7
4
Scores(y)
64
79
59
87
65
77
84
89
89
70

1. Make a scatter plot for these data and determine the direction of the relationship between sleep hours and Scores.
2. Find the correlation coefficient (r) between Hours and Scores.
3. Determine whether there is a significant linear correlation between the two variables.
4. If there is a positive/negative linear correlation,
5. Find the equation of the regression line. and what is the best-predicted score of a student who slept 8 hours?

Wallis company manufactures only one product and uses a standard cost system. the company uses a predetermined plantwide overhead rate that relies on direct labor-hours as the allocation base. all of the company's manufacturing overhead costs are fixed—it does not incur any variable manufacturing overhead costs. the predetermined overhead rate is based on a cost formula that estimated $2,886,000 of fixed manufacturing overhead for an estimated allocation base of 288,600 direct labor-hours. wallis does not maintain any beginning or ending work in process inventory.

Analyzing operational changes operating results for department b of delta company during 2016 are as follows: sales $540,000 cost of goods sold 378,000 gross profit 162,000 direct expenses 120,000 common expenses 66,000 total expenses 186,000 net loss $(24,000) suppose that department b could increase physical volume of product sold by 10% if it spent an additional $18,000 on advertising while leaving selling prices unchanged. what effect would this have on the department's net income or net loss? (ignore income tax in your calculations.) use a negative sign to indicate a net loss answer; otherwise do not use negative signs with your answers. sales $answer cost of goods sold answer gross profit answer direct expenses answer common expenses answer total expenses answer net income (loss) $answer

If a transformational leader is supposed to be so smart and visionary, why would he or she emphasize empowerment in his or her leadership approach?