Answer:
(4,18)
Step-by-step explanation:
Z-test should be used when the parent standard deviation is known and the sample size is greater than or equal to 30 (to satisfy the Central Limit Theorem). A T-test should be used when these two rules do not apply.
The price of camera Sarah can afford given a savings of $500 and cost of camera lens of $130 is $370
- Cost of a new camera = $x
- Cost of camera lens = $130
- Amount Sarah saved = $500
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The equation</h3>
The cost of new camera = Amount Sarah saved - Cost of camera lens
x = $500 - $130
x = $370
Therefore, the approximation of $370 to 2 decimal point is $370.00
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