A sports store is having a sale on skates you want to buy a pair that originally cost $135. The sales tax is 5.5%, and it will b
1 answer:
Answer:
$142.425
Step-by-step explanation:
Given:
A sports store is having a sale on skates, a pair originally cost is $135.
The sales tax is 5.5%
Question asked:
What is the total cost ?
Solution:
To find the total cost of a pair of skates, first of all we will find sale tax amount and then simply add the original cost and sale tax amount.
Original cost of a pair of skates = $135
Sales tax = 5.5%
Sales tax amount =
Total cost = Original cost + sale tax amount
= $135 + $7.425
= $142.425
Therefore, the total cost of a pair of skates at a sports store is $142.425
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Answer:
Step-by-step explanation:
From the given information;
The null hypothesis & alternative hypothesis:
The test statistics can be computed as:
The p-value = 2(Z > 2.11) since this is a two-tailed test
The p-value = 2( 1 - Z < 2.11)
The p-value = 2 (1 -0.9826)
The p-value = 2 (0.0174)
The p-value = 0.0348
Decision Rule: To reject the if the p-value is less than
Conclusion: We fail to reject and conclude that the population mean = 2, thus the machine is properly adjusted.