A fast food restaurant estimates that the mean sodium content in one of its breakfast sandwiches is no more than 920 milligrams. A random sample of 30 breakfast sandwiches has a mean sodium content of 910 milligra population standard deviation is 25 milligrams. At a = 0.10, do you have enough evidence to reject the restaurant's claim? Complete parts (a) through (e). (a) Identify the null hypothesis and alternative hypothesis. Yc. Ho: us920 (claim) ΟΑ Η : μ5910 H:u<910 (claim) O B. Ho: H=910 (claim) H:u> 920 O E. Ho:u<910 (claim) O D. Ho: u>920 Ha:us 920 (claim) OF. Ho: u#920 (claim) H:p= 920 H: u2910 (b) Identify the critical value(s). Use technology. = 1.28 (Use a comma separate answers as needed. Round to two decimal places as needed.) Identify the rejection region(s). Select the correct choice below. The rejection region is z> 1.28. O B. The rejection region is z<1.28.

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A fast food restaurant estimates that the mean sodium content in one of its breakfast sandwiches is no more than 920 milligrams. A random sample of 30 breakfast sandwiches has a mean sodium content of 910 milligrams. Assume the population standard deviation is 25 milligrams. At α = 0.10, do you have enough evidence to reject the restaurant's claim? Complete parts (a) through (e).

(a) Identify the null hypothesis and alternative hypothesis.

- A. \( H_0: \mu \leq 910 \)  
  \( H_a: \mu < 910 \) (claim)

- B. \( H_0: \mu = 910 \) (claim)  
  \( H_a: \mu \neq 910 \)

- C. **\( H_0: \mu \leq 920 \) (claim)  
  \( H_a: \mu > 920 \)**

- D. \( H_0: \mu > 920 \)  
  \( H_a: \mu \leq 920 \) (claim)

- E. \( H_0: \mu < 910 \) (claim)  
  \( H_a: \mu \geq 910 \)

- F. \( H_0: \mu \neq 920 \) (claim)  
  \( H_a: \mu = 920 \)

(b) Identify the critical value(s). Use technology.

\( z_0 = 1.28 \)

(Use a comma to separate answers as needed. Round to two decimal places as needed.)

Identify the rejection region(s). Select the correct choice below.

- **A. The rejection region is \( z > 1.28 \).**

- B. The rejection region is \( z < 1.28 \).

- C. The rejection regions are \( z > 1.28 \) and \( z < -1.28 \).

(c) Identify the standardized test statistic. Use technology.

\( z = \) 

(Round to two decimal places as needed.)
Transcribed Image Text:A fast food restaurant estimates that the mean sodium content in one of its breakfast sandwiches is no more than 920 milligrams. A random sample of 30 breakfast sandwiches has a mean sodium content of 910 milligrams. Assume the population standard deviation is 25 milligrams. At α = 0.10, do you have enough evidence to reject the restaurant's claim? Complete parts (a) through (e). (a) Identify the null hypothesis and alternative hypothesis. - A. \( H_0: \mu \leq 910 \) \( H_a: \mu < 910 \) (claim) - B. \( H_0: \mu = 910 \) (claim) \( H_a: \mu \neq 910 \) - C. **\( H_0: \mu \leq 920 \) (claim) \( H_a: \mu > 920 \)** - D. \( H_0: \mu > 920 \) \( H_a: \mu \leq 920 \) (claim) - E. \( H_0: \mu < 910 \) (claim) \( H_a: \mu \geq 910 \) - F. \( H_0: \mu \neq 920 \) (claim) \( H_a: \mu = 920 \) (b) Identify the critical value(s). Use technology. \( z_0 = 1.28 \) (Use a comma to separate answers as needed. Round to two decimal places as needed.) Identify the rejection region(s). Select the correct choice below. - **A. The rejection region is \( z > 1.28 \).** - B. The rejection region is \( z < 1.28 \). - C. The rejection regions are \( z > 1.28 \) and \( z < -1.28 \). (c) Identify the standardized test statistic. Use technology. \( z = \) (Round to two decimal places as needed.)
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