The followings are the questions I have trouble to answer. I am appreciated your

Question

The followings are the questions I have trouble to answer. I am appreciated your help. May I ask if you provide a step by step explanation, please? Thanks!

1.

At some company any employee’s salary (in Canadian dollars) is related
to the numb er of years of work exp erience (YEARS) and to the numb er of years of p ost-high scho ol education (POSTHSED). Based on a
sample data of size 194 employees drawn randomly from the company,
the (fitted) multiple regression equation is found to b e
SALARY = 39436 + 1306 POSTHSED + 833 YEARS.
Predict a salary for an employee with three ( 3) years work experience
and with five ( 5) years post-high school education.
(a) $56548
(b) $47519
(c) $48465
(d) $49884

2.

Carol Morris asked a random sample of students their preferred soft
drink from among Coke, Pepsi, and 7-Up. Her results are the following
table:
Coke Pepsi 7-Up
26 18 10
Based on the data above, she tests the hypothesis at the 0.05 level
that the three soft drinks are equally preferred by the population of
students. That is, she tests H0: The population students preferred soft
drink proportions are Coke = 1/3, Pepsi = 1/3, and 7-Up = 1/3 vs.
Ha
: The students preferred soft drink proportions are not as specified
in H0. Find the observed value of the appropriate test statistic.
(a) 128
(b) 8.8615
(c) 3.5556
(d) 7.1111

At some company any employee's salary (in Canadian dollars) is related to the number of years of work experience (YEARS) and to the num- ber of years of post-high school education (POSTHSED). Based on a sample data of size 194 employees drawn randomly from the company, the (fitted) multiple regression equation is found to be SALARY 39436 1306 POSTHSED 833 YEARS. Predict a salary for an employee with three (3) years work experience and with five (5) years post-high school education. (a) $56548 (b) $47519 (c) $48465 (d) $49884 Carol Morris asked a random sample of students their preferred soft drink from among Coke, Pepsi, and 7-Up. Her results are the following table Coke Pepsi 7-Up 26 18 10 Based on the data above, she tests the hypothesis at the 0.05 level that the three soft drinks are equally preferred by the population of students. That is, she tests Ho: The population students preferred soft drink proportions are Coke J 1/3, Pepsi 1/3, and 7-Up 1/3 vs. Ha: The students preferred soft drink proportions are not as specified in Ho. Find the observed value of the appropriate test statistic (a) 128 (b) 8.8615 (c) 3.5556 (d) 7.1111

Explanation / Answer

Attempting Q1)

Years of exp = 3

Post-high Edn: 5

Salary = 39436 +1306*5+833*3 = $48465

Option C is right

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