Let x be a random variable representing dividend yield of bank stocks. We may assume that x has a normal distribution with ? = 2.5%. A random sample of 10 bank stocks gave the following yields (in percents). 5.7 4.8 6.0 4.9 4.0 3.4 6.5 7.1 5.3 6.1 The sample mean is = 5.38%. Suppose that for the entire stock market, the mean dividend yield is ? = 4.9%. Do these data indicate that the dividend yield of all bank stocks is higher than 4.9%? Use ? = 0.01. (a) What is the level of significance? State the null and alternate hypotheses. Will you use a left-tailed, right-tailed, or two-tailed test? H0: ? = 4.9%; H1: ? > 4.9%; right-tailed H0: ? > 4.9%; H1: ? = 4.9%; right-tailed H0: ? = 4.9%; H1: ? ≠ 4.9%; two-tailed H0: ? = 4.9%; H1: ? < 4.9%; left-tailed
Let x be a random variable representing dividend yield of bank stocks. We may assume that x has a normal distribution with ? = 2.5%. A random sample of 10 bank stocks gave the following yields (in percents). 5.7 4.8 6.0 4.9 4.0 3.4 6.5 7.1 5.3 6.1 The sample mean is = 5.38%. Suppose that for the entire stock market, the mean dividend yield is ? = 4.9%. Do these data indicate that the dividend yield of all bank stocks is higher than 4.9%? Use ? = 0.01. (a) What is the level of significance? State the null and alternate hypotheses. Will you use a left-tailed, right-tailed, or two-tailed test? H0: ? = 4.9%; H1: ? > 4.9%; right-tailed H0: ? > 4.9%; H1: ? = 4.9%; right-tailed H0: ? = 4.9%; H1: ? ≠ 4.9%; two-tailed H0: ? = 4.9%; H1: ? < 4.9%; left-tailed
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
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Let x be a random variable representing dividend yield of bank stocks. We may assume that x has a
- 5.7
- 4.8
- 6.0
- 4.9
- 4.0
- 3.4
- 6.5
- 7.1
- 5.3
- 6.1
The sample mean is = 5.38%. Suppose that for the entire stock market, the mean dividend yield is ? = 4.9%. Do these data indicate that the dividend yield of all bank stocks is higher than 4.9%? Use ? = 0.01.
(a)
What is the level of significance?State the null and alternate hypotheses. Will you use a left-tailed, right-tailed, or two-tailed test?
H0: ? = 4.9%; H1: ? > 4.9%; right-tailed
H0: ? > 4.9%; H1: ? = 4.9%; right-tailed
H0: ? = 4.9%; H1: ? ≠ 4.9%; two-tailed
H0: ? = 4.9%; H1: ? < 4.9%; left-tailed
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