Question

In: Statistics and Probability

Consider the hypotheses shown below. Given that x overbarxequals=40​, sigmaσequals=13​, nequals=31​, alphaαequals=0.01​, complete parts a and...

Consider the hypotheses shown below. Given that

x overbarxequals=40​,

sigmaσequals=13​,

nequals=31​,

alphaαequals=0.01​,

complete parts a and b.

Upper H 0H0​:

muμless than or equals≤38

Upper H 1H1​:

muμgreater than>38

​a) What conclusion should be​ drawn?

​b) Determine the​ p-value for this test.

​a) The​ z-test statistic is

.86.

​(Round to two decimal places as​ needed.)

The critical​ z-score(s) is(are) ?

Reject or fail to reject, why or why not?

p-value?

Solutions

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