Question
The Wall Street Journal published a study in May 2019 claiming that it was hard to...
The Wall Street Journal published a study in May 2019 claiming that it was hard to find CEOs that are younger than 50 years old in S&P 500 firms. The Table 4.1 shows the ages of the corporate CEOs for a random sample of these firms.
|
48 |
58 |
51 |
61 |
56 |
|
59 |
74 |
63 |
53 |
50 |
|
59 |
60 |
40 |
57 |
46 |
|
55 |
63 |
57 |
47 |
55 |
|
57 |
43 |
61 |
62 |
49 |
Table 4.1
Use this sample data to construct a 90% confidence interval for the mean age of CEO’s for these top firms. Use the Student's t-distribution.
Homework Answers
Answer #1
For the given data
mean = 55.36
s.d = 7.4436
ANSWER : 90 % C.I 52.813 < MU < 57.907
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