7.2(12b)

A fast food restaurant estimates that the mean sodium content in one of its breakfast sandwiches is no more than

926

milligrams. A random sample of

48

breakfast sandwiches has a mean sodium content of

920

milligrams. Assume the population standard deviation is

25

milligrams. At

=0.10,

do you have enough evidence to reject the restaurant's claim? Complete parts (a) through (e).

Question content area bottom

Part 1

(a) Identify the null hypothesis and alternative hypothesis.

A.

H0:

=920

(claim)

Ha:

920

B.

H0:

>926

Ha:

926

(claim)

C.

H0:

926

(claim)

Ha:

>926

Your answer is correct.

D.

H0:

926

(claim)

Ha:

=926

E.

H0:

<920

(claim)

Ha:

920

F.

H0:

920

Ha:

<920

(claim)

Part 2

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

z0=enter your response here

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