Suppose it is claimed that 40% of adults support the practice of changing clocks twice a year in observance of Daylight Saving Time. Believing this claimed value is too high, a sociologist surveys a random sample of 310 adults and finds that 113 of these adults say they support the practice of changing clocks twice a year in observance of Daylight Saving Time. Given that 113 out of a random sample of 310 adults indicated that they support the practice of changing clocks twice a year in observance of Daylight Saving Time, what will the sample proportion (or ) be? Please compute this value below and round your answer to three decimal places. 2. To be able to conduct a hypothesis test, we will now need to compute a test statistic (using the following formula). Please attempt to compute this test statistic below, showing as much work as you can. To be as precise as you can be, round the denominator to three decimal places before dividing the value from the numerator by the denominator. 3. As part of the process of conducting a hypothesis test, we need to find what’s called a probability value, or a P-value for short. This P-value value tells us something about how likely it would be to observe a sample outcome as extreme or more extreme than what we observed, if the null hypothesis is really true. Based on the test stati
Suppose it is claimed that 40% of adults support the practice of changing clocks twice a year in observance of Daylight Saving Time. Believing this claimed value is too high, a sociologist surveys a random sample of 310 adults and finds that 113 of these adults say they support the practice of changing clocks twice a year in observance of Daylight Saving Time.
- Given that 113 out of a random sample of 310 adults indicated that they support the practice of changing clocks twice a year in observance of Daylight Saving Time, what will the sample proportion (or ) be? Please compute this value below and round your answer to three decimal places.
2. To be able to conduct a hypothesis test, we will now need to compute a test statistic (using the following formula). Please attempt to compute this test statistic below, showing as much work as you can. To be as precise as you can be, round the denominator to three decimal places before dividing the value from the numerator by the denominator.
3. As part of the process of conducting a hypothesis test, we need to find what’s called a probability value, or a P-value for short. This P-value value tells us something about how likely it would be to observe a sample outcome as extreme or more extreme than what we observed, if the null hypothesis is really true. Based on the test statistic you calculated to answer Question 6, what should the P-value be equal to? Please use Table B to find this P-value. (Hint: Don’t forget that since a P-value is a probability, you will now need to take the percentile you get from Table B and divide it by 100 to convert it to a probability).
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