Answer:
1442
Step-by-step explanation:
Given,
Mean is,
Standard deviation,
,
Margin of error(E) = 0.54,
For 98% level of confidence,
Thus, the sample size would be,
2√5+√7..............<span>
</span>
Let the cost of jacket before sales tax be z.
sales tax = $2.38
When the sales tax was included the jacket = $37
Cost of Jacket + Sales tax = 37
z + 2.38 = 37 Equation
z = 37 - 2.38
z = 34.62
Hence cost of jacket = $34.62
Hope this explains it.
The answer would be B! I hope this helps.