Question

PG&E states that it has a target power supply of 120 volts. Use the home voltage supply amounts in the Voltage data file to test the claim that the mean is 120 volts.

1. Create a histogram of the home voltage data. Copy and paste your histogram here.

2. Does our assumption of normality appear to be satisfied?
   1. Yes
   2. No
3. What is your null and alternative?
   1. H0: µ = 120, H1: µ ≠ 120
   2. H0: µ ≠ 120, H1: µ = 120
   3. H0: µ = 120, H1: µ > 120
   4. H0: µ > 120, H1: µ = 120
   5. None of the abov Provide your own answer.

4. What is your decision?
   1. Support H1
   2. Cannot support H1
   3. Cannot make a decision at this time
   4. We do not have enough data to make an educated guess
   5. None of the abov Provide your own answer.

5. What is your conclusion?
   1. We have sufficient evidence to show that the mean home voltage is 120 volts.
   2. We do not have sufficient evidence to show that the mean home voltage is 120 volts.
   3. We have sufficient evidence to show the mean home voltage is the higher than 120 volts.
   4. We do not have sufficient evidence to show that the mean home voltage is higher than 120 volts.
   5. None of the abov Provide your own answer.

6. Does the confidence interval support your conclusion?
   1. Yes
   2. No
   3. Cannot determine at this time
   4. None of the above. Provide your own answer.

7. If there is a statically significant difference, does that difference have practical significance?
   1. Yes
   2. No

Home
123.8
123.9
123.9
123.3
123.4
123.3
123.3
123.6
123.5
123.5
123.5
123.7
123.6
123.7
123.9
124.0
124.2
123.9
123.8
123.8
124.0
123.9
123.6
123.5
123.4
123.4
123.4
123.4
123.3
123.3
123.5
123.6
123.8
123.9
123.9
123.8
123.9
123.7
123.8
123.8

Answer 1