Directions: Identify whether the given hypothesis is one-tailed or two-tailed. Write ONE if it is one-tailed and TWO if it is two-tailed test. 1. A used car dealer says that the mean price car in the Philippines is at least P350,000. 2. PAG-ASA reported that the mean annual rainfall in the Philippines is at most 4,064mm. 3. According to the survey, the average cost of visiting doctors is P500.

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Activity 4. One-Tailed or Two-Tailed!
Directions: Identify whether the given hypothesis is one-tailed or two-tailed.
Write ONE if it is one-tailed and TWO if it is two-tailed test.
1. A used car dealer says that the mean price car in the Philippines is at
least P350,000.
2. PAG-ASA reported that the mean annual rainfall in the Philippines is at
most 4,064mm.
3. According to the survey, the average cost of visiting doctors is P500.
4. The mean age of students in a university in the previous years was 27
years old. An instructor thinks the mean age for students is older than
27. She randomly surveys 56 students and finds that the sample mean is
29 with a standard deviation of 2.
5. The mean work week for engineers in a new company is believed to be
about 40 hours. A newly hired engineer hopes that it is shorter. She asks
10 engineering friends for the lengths of their mean work weeks. Based
on the results, should she count on the mean work week to be shorter
than 40 hours?
Transcribed Image Text:Activity 4. One-Tailed or Two-Tailed! Directions: Identify whether the given hypothesis is one-tailed or two-tailed. Write ONE if it is one-tailed and TWO if it is two-tailed test. 1. A used car dealer says that the mean price car in the Philippines is at least P350,000. 2. PAG-ASA reported that the mean annual rainfall in the Philippines is at most 4,064mm. 3. According to the survey, the average cost of visiting doctors is P500. 4. The mean age of students in a university in the previous years was 27 years old. An instructor thinks the mean age for students is older than 27. She randomly surveys 56 students and finds that the sample mean is 29 with a standard deviation of 2. 5. The mean work week for engineers in a new company is believed to be about 40 hours. A newly hired engineer hopes that it is shorter. She asks 10 engineering friends for the lengths of their mean work weeks. Based on the results, should she count on the mean work week to be shorter than 40 hours?
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