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kirill115 [55]
3 years ago
14

You go bowling and it costs 20 dollars plus 5 dollars per person (p). Which expression represents the total cost?

Mathematics
2 answers:
mars1129 [50]3 years ago
4 0

Answer:

20+?P

Step-by-step explanation:

You would have 20 there bc you have 20 dollars originally charged then depending on the number of people going its 5 dollars a person so it would be 20 + "number of people here" P

Hope this helps,

Can i get a brainlist or like :)

Thanks

bogdanovich [222]3 years ago
3 0
20+5p

20 is for the one-time fee to bowl and 5 is the cost for 1 person (p).
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Regarding the hypothesis tested in this problem, it is found that:

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c) The null hypothesis is not rejected, as the p-value is greater than the significance level.

d) It appears that the students are legitimately good at estimating one minute, as the sample does not give enough evidence to reject the null hypothesis.

<h3>What is the test statistic?</h3>

The test statistic of the t-distribution is given by the equation presented as follows:

t = \frac{\overline{x} - \mu}{\frac{s}{\sqrt{n}}}

In which the variables of the equation are given as follows:

  • \overline{x} is the sample mean.
  • \mu is the value tested at the hypotheses.
  • s is the standard deviation of the sample.
  • n is the sample size.

The value tested at the hypothesis is:

\mu = 60

From the sample, using a calculator, the other parameters are given as follows:

\overline{x} = 62.47, s = 19.2, n = 15

Hence the test statistic is obtained as follows:

t = \frac{\overline{x} - \mu}{\frac{s}{\sqrt{n}}}

t = \frac{62.47 - 60}{\frac{19.2}{\sqrt{15}}}

t = 0.49.

<h3>What are the p-value and the conclusion?</h3>

The p-value is obtained using a t-distribution calculator, with a two-tailed test, as we are testing if the mean is different a value, in this case 60, with:

  • 15 - 1 = 14 df, as the number of degrees of freedom is one less than the sample size.
  • t = 0.49, as obtained above.

Hence the p-value is of 0.6297.

Since the p-value is greater than the significance level of 0.01, the null hypothesis is not rejected, attesting to the ability of the students to estimate one minute.

More can be learned about the test of an hypothesis at brainly.com/question/13873630

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