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3 years ago

An item has a listed price for $80 if sales tax rate is 3% how much is sales tax in dollars

Mathematics

1 answer:

Greeley [361]3 years ago

6 0

Answer: The sales tax would be $2.40

Step-by-step explanation:

Another way of writing any percent would be diving that percent by 100, so 3% would be 0.03 4% would be 0.04 and so forth.

All you have to do is multiply 80 by the decimal of the percent

80 * 0.03 =2.4 or $2.40

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Scilla [17]

With all of the following you are able to make a graph, table, and a equation.

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3 years ago

a previous analysis of paper boxes showed that the standard deviation of their lengths is 15 millimeters. A packers wishes to fi

vladimir1956 [14]

Answer:

864.36 boxes

Step-by-step explanation:

In the question above, we are given the following values,

Confidence interval 95%

Since we know the confidence interval, we can find the score.

Z score = 1.96

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Margin of error = 1 mm

The formula to use to solve the above question is given as:

No of boxes =[ (z score × standard deviation)/ margin of error]²

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Based on the options above, we can round it up to 97 boxes.

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3 years ago

An equation is shown.

mr_godi [17]

Answer:

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Step-by-step explanation:

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3 years ago

A running coach wants to know if participating in weekly running clubs significantly improves the time to run a mile. The runnin

patriot [66]

Answer:

Option B is correct.

Use the difference in sample means (10 and 8) in a hypothesis test for a difference in two population means.

Step-by-step Explanation:

The clear, complete table For this question is presented in the attached image to this solution.

It should be noted that For this question, the running coach wants to test if participating in weekly running clubs significantly improves the time to run a mile.

In the data setup, the mean time to run a mile in January for those that participate in weekly running clubs and those that do not was provided.

The mean time to run a mile in June too is provided for those that participate in weekly running clubs and those that do not.

Then the difference in the mean time to run a mile in January and June for the two classes (those that participate in weekly running clubs and those that do not) is also provided.

Since, the aim of the running coach is to test if participating in weekly running clubs significantly improves the time to run a mile, so, it is logical that it is the improvements in running times for the two groups that should be compared.

Hence, we should use the difference in sample means (10 and 8) in a hypothesis test for a difference in two population means.

Hope this Helps!!!

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3 years ago

Copy and complete the table.

suter [353]

Answer:

See pic below.

Step-by-step explanation:

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3 years ago