A company claims that the mean monthly residential electricity consumption in a certain region is more than 860 kiloWatt-hours (kWh). You want to test this claim. You find that a random sample of 66 residential customers has a mean monthly consumption of 880 kWh. Assume the population standard deviation is 121 kWh. At a = 0.05, can you support the claim? Complete parts (a) through (e). (a) Identify Ho and Ha. Choose the correct answer below. B. Ho:H> 880 (claim) O A. Ho: H> 860 (claim) Hai HS 860 Ha:HS 880 O C. Ho: H5 860 Ha: H> 860 (claim) O D. Ho: H= 880 Ha: H + 880 (claim) O E. Ho: HS880 O F. Ho:H=860 (claim) Ha: H>880 (claim) Ha:H#860 ? Click to select your answer and then click Check Answer.

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A company claims that the mean monthly residential electricity consumption in a certain region is more than 860 kilowatt-hours (kWh). You want to test this claim. You find that a random sample of 66 residential customers has a mean monthly consumption of 880 kWh. Assume the population standard deviation is 121 kWh. At α = 0.05, can you support the claim? Complete parts (a) through (e).

(a) Identify \( H_0 \) and \( H_a \). Choose the correct answer below.

- A. \( H_0: \mu \leq 860 \) (claim)
  \[ H_a: \mu > 860 \]

- B. \( H_0: \mu > 880 \) (claim)
  \[ H_a: \mu \leq 880 \]

- C. \( H_0: \mu \geq 860 \)
  \[ H_a: \mu < 860 \] (claim)

- D. \( H_0: \mu = 880 \)
  \[ H_a: \mu \neq 880 \] (claim)

- E. \( H_0: \mu = 880 \)
  \[ H_a: \mu \neq 880 \]

- F. \( H_0: \mu = 860 \) (claim)
  \[ H_a: \mu \neq 860 \]

Click to select your answer and then click Check Answer.

There is a progress bar showing "5 parts remaining" and buttons labeled "Clear All" and "Check Answer."
Transcribed Image Text:A company claims that the mean monthly residential electricity consumption in a certain region is more than 860 kilowatt-hours (kWh). You want to test this claim. You find that a random sample of 66 residential customers has a mean monthly consumption of 880 kWh. Assume the population standard deviation is 121 kWh. At α = 0.05, can you support the claim? Complete parts (a) through (e). (a) Identify \( H_0 \) and \( H_a \). Choose the correct answer below. - A. \( H_0: \mu \leq 860 \) (claim) \[ H_a: \mu > 860 \] - B. \( H_0: \mu > 880 \) (claim) \[ H_a: \mu \leq 880 \] - C. \( H_0: \mu \geq 860 \) \[ H_a: \mu < 860 \] (claim) - D. \( H_0: \mu = 880 \) \[ H_a: \mu \neq 880 \] (claim) - E. \( H_0: \mu = 880 \) \[ H_a: \mu \neq 880 \] - F. \( H_0: \mu = 860 \) (claim) \[ H_a: \mu \neq 860 \] Click to select your answer and then click Check Answer. There is a progress bar showing "5 parts remaining" and buttons labeled "Clear All" and "Check Answer."
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