the market price of refrigerator is 1,660 John has a coupon for 15% off find the selling price of refrigerator with the coupon
1 answer:
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Answer:
22.97
Step-by-step explanation:
Given that the average cost of an IRS Form 1040 tax filing at Thetis Tax Service is $138.00.
Let x be the average cost an IRS Form 1040 tax filing at Thetis Tax Service
is given
From std normal distribution table we find 77th percentile z value.
z=0.74
Corresponding X value = 155
i.e. where s is the std deviation
Simplify to get
Std deviation =