Question

A researcher claims that the mean cost of raising a child
from birth to age 2 by husband-wife families in the U.S. is $13,960. A
random sample of 500 children (age 2) has a mean cost of $13,725.
Assume the population standard deviation is $2345. (You may use MS-
excel or SPSS software to execute the problem).
a) Calculate the test statistic.
b) Write your hypothesis and define test is one tailed or two tailed test.

Answer 1

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A researcher claims that the mean cost of raising a child from birth to age 2 by husband-wife

families in the U.S.is $13,960.

The graph is

The

e

=

is the test statistic.

The

is

Make the decision to

the Ho.

There

• enough evidence to

the claim the mean

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Transcribed image text: A researcher claims that the mean cost of raising a child from birth to age 2 by husband-wife families in the U.S.is $13,960. A random sample of 500 children (age 2) has a mean cost of $13,725. Assume the population standard deviation is $2345. At a = 0.10, is there enough evidence to reject the claim? Identify the null hypothesis, Ho. Ho : Identify the alternate hypothesis, Ha. Ha: The represents the claim. The graph is The . is the test statistic, The 4 is Make the decision to the Ho. The graph is The e = is the test statistic. The is Make the decision to the Ho. There • enough evidence to the claim the mean cost of raising a child from birth to age 2 by husband-wife families in the U.S. is $13,960. Reject H.: if p-value sa Fail to Reject H.: if p-value > a Decision Reject Il Claim Claim is Claim is There is enough evidence to There is enough evidence to reject the claim support the claim There is not enough evidence There is not enough evidence to reject the claim to support the claim Fail to reject 1

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