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B. Read and understand the given situations below. Determine the null and alternative hypotheses in words and in symbols, the value of ? or ?/2 based on the alternative hypothesis in decimal form. 1. A mathematics teacher in senior high school developed a problem-solving test to randomly selected 40 grade 11 students. These students had an average score of 85 and a standard deviation of 5. If the population had a mean score of 90 and a standard deviation of 3, use 5% level of significance to test the hypothesis. Null hypothesis: Symbol: Alternative hypothesis: Symbol: Level of Significance(?): 2. An association of City Mayors conducted a study to determine the average number of times a family went to buy necessities in a week. They found that the mean is 4 times in a week. A random sample of 20 families were asked and found a mean of 5 times in a week and a standard deviation of 2. Use 5% significance level to test that the population mean is not equal to 4. Assume that the population is normally distributed. Null hypothesis: Symbol: Alternative hypothesis: Symbol: Level of Significance (?/2):

          B. Read and understand the given situations below. Determine the null and alternative hypotheses in words and in symbols, the value of ? or ?/2 based on the alternative hypothesis in decimal form.

1. A mathematics teacher in senior high school developed a problem-solving test to randomly selected 40 grade 11 students. These students had an average score of 85 and a standard deviation of 5. If the population had a mean score of 90 and a standard deviation of 3, use 5% level of significance to test the hypothesis.
Null hypothesis:
Symbol:
Alternative hypothesis:
Symbol:
Level of Significance(?):

2. An association of City Mayors conducted a study to determine the average number of times a family went to buy necessities in a week. They found that the mean is 4 times in a week. A random sample of 20 families were asked and found a mean of 5 times in a week and a standard deviation of 2. Use 5% significance level to test that the population mean is not equal to 4. Assume that the population is normally distributed.
Null hypothesis:
Symbol:
Alternative hypothesis:
Symbol:
Level of Significance (?/2):

B. Read and understand the given situations below. Determine the null and alternative hypotheses in words and in symbols, the value of ? or ?/2 based on the alternative hypothesis in decimal form.

1. A mathematics teacher in senior high school developed a problem-solving test to randomly selected 40 grade 11 students. These students had an average score of 85 and a standard deviation of 5. If the population had a mean score of 90 and a standard deviation of 3, use 5% level of significance to test the hypothesis.
Null hypothesis:
Symbol:
Alternative hypothesis:
Symbol:
Level of Significance(?):

2. An association of City Mayors conducted a study to determine the average number of times a family went to buy necessities in a week. They found that the mean is 4 times in a week. A random sample of 20 families were asked and found a mean of 5 times in a week and a standard deviation of 2. Use 5% significance level to test that the population mean is not equal to 4. Assume that the population is normally distributed.
Null hypothesis:
Symbol:
Alternative hypothesis:
Symbol:
Level of Significance (?/2):

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