A supermarket owners believes that the mean income of its customers is 50,000 per month. One- hundred customers are randomly selected and asked of their monthly income. The sample mean is 48,500 per month and the standard deviation is 3,200. Test the hypothesis using 0.05 as level of significance. HYPOTHESIS TESTING 1. Formulate the null and the alternative Ho: The mean income of the customers of a hypotheses supermarket is 50,000 per month. In symbol: Ho: Ha: In symbol: Ha: 50,000 2. Specify the following: A. Level of Significance A. a = 0.05 B. Types of Hypothesis Testing [one- B. tailed test (left-tailed or right-tailed) or a two-tailed test] 3. Specify the following: A. The test statistic to be used. (z-test: A. Z-TEST: ONE SAMPLE one sample mean or z-test: two sample means) B. The critical or tabular value (Zeritical). (Can be found on the given table of Tabular Value of Z) 4. Compute for the value of the test statistic (Z computed) using the data from the population and the sample/s. (X-H)√√ B. Formula: Z computed Given: μ-50,000 X-48, 500 s-3,200 Substitute the given to the formula:

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Instructions: Complete the table by following the steps and procedures in Hypothesis Testing.
A supermarket owners believes that the mean income of its customers is 50,000 per month. One-
hundred customers are randomly selected and asked of their monthly income. The sample mean is
48,500 per month and the standard deviation is 3,200. Test the hypothesis using 0.05 as level of
significance.
HYPOTHESIS TESTING
1. Formulate the null and the alternative Ho: The mean income of the customers of a
hypotheses
supermarket is 50,000 per month.
In symbol:
Ho:
Ha:
In symbol:
Ha: μ = 50,000
2. Specify the following:
A. Level of Significance
A. a = 0.05
B. Types of Hypothesis Testing [one-B.
tailed test (left-tailed or right-tailed) or
a two-tailed test]
3. Specify the following:
A. The test statistic to be used. (z-test: A. Z-TEST: ONE SAMPLE
one sample mean or z-test: two sample
means)
B.
B. The critical or tabular value
(Zeritical). (Can be found on the given
table of Tabular Value of Z)
Formula:
4. Compute for the value of the test
statistic (Zcomputed) using the data from
the population and the sample/s.
(x-μ)√
Zcomputed =
Given:
μ-50,000
X-48, 500
n-
s-3,200
Substitute the given to the formula:
Transcribed Image Text:Instructions: Complete the table by following the steps and procedures in Hypothesis Testing. A supermarket owners believes that the mean income of its customers is 50,000 per month. One- hundred customers are randomly selected and asked of their monthly income. The sample mean is 48,500 per month and the standard deviation is 3,200. Test the hypothesis using 0.05 as level of significance. HYPOTHESIS TESTING 1. Formulate the null and the alternative Ho: The mean income of the customers of a hypotheses supermarket is 50,000 per month. In symbol: Ho: Ha: In symbol: Ha: μ = 50,000 2. Specify the following: A. Level of Significance A. a = 0.05 B. Types of Hypothesis Testing [one-B. tailed test (left-tailed or right-tailed) or a two-tailed test] 3. Specify the following: A. The test statistic to be used. (z-test: A. Z-TEST: ONE SAMPLE one sample mean or z-test: two sample means) B. B. The critical or tabular value (Zeritical). (Can be found on the given table of Tabular Value of Z) Formula: 4. Compute for the value of the test statistic (Zcomputed) using the data from the population and the sample/s. (x-μ)√ Zcomputed = Given: μ-50,000 X-48, 500 n- s-3,200 Substitute the given to the formula:
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