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jeyben [28]
3 years ago
5

Tom earned £173 last week and he worked for 25 hours. how much does he earn?

Mathematics
2 answers:
crimeas [40]3 years ago
5 0

Answer:

Total amount of money Tom earned per hour is 6.92 dollars per hour.

Step-by-step explanation:

It is given that Tom earned money last week = {\textdollar}173

Total hours he worked= 25 hours

Now, total amount Tom earned per hour is=\frac{Total amount he earned}{total number of hours worked}

=\frac{173}{25}

={\textdollar}6.92

Therefore, total amount of money Tom earned per hour is 6.92 dollars per hour.

ValentinkaMS [17]3 years ago
4 0
TOm earned 173 dollars Last week working for 25 hours.
Now, if you're asking about his earnings, it's 173 dollars.
But if you're asking about his hourly rate.Let's find out:
=> 173 / 25 = 6.92 dollars per hour.
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Based on historical data in Oxnard college, we believe that 37% of freshmen do not visit their counselors regularly. For this ye
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Answer:

A sample size of 1031 is required.

Step-by-step explanation:

In a sample with a number n of people surveyed with a probability of a success of \pi, and a confidence level of 1-\alpha, we have the following confidence interval of proportions.

\pi \pm z\sqrt{\frac{\pi(1-\pi)}{n}}

In which

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The margin of error is of:

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This means that \pi = 0.37

98% confidence level

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You would like to be 98% confident that your estimate is within 3.5% of the true population proportion. How large of a sample size is required?

A sample size of n is required.

n is found when M = 0.035. So

M = z\sqrt{\frac{\pi(1-\pi)}{n}}

0.035 = 2.327\sqrt{\frac{0.37*0.63}{n}}

0.035\sqrt{n} = 2.327\sqrt{0.37*0.63}

\sqrt{n} = \frac{2.327\sqrt{0.37*0.63}}{0.035}

(\sqrt{n})^2 = (\frac{2.327\sqrt{0.37*0.63}}{0.035})^2

n = 1030.4

Rounding up:

A sample size of 1031 is required.

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