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Diano4ka-milaya [45]
3 years ago
5

Petra jogs 2 miles in 22 minutes. At this rate, how long would it take her to jog 11 miles?

Mathematics
2 answers:
zmey [24]3 years ago
8 0

Answer:

11 minute

Step-by-step explanation:

22 min/2 miles

11 min/ 1 mile

zavuch27 [327]3 years ago
4 0

22 minutes ÷2=11 minutes for 1 mile

11 ×11=121 for 11 miles

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P-value for this hypothesis test is 0.00175.

Step-by-step explanation:

We are given that the alumni association conducted a survey to see if alumni were in favor of firing the coach.

A simple random sample of 100 alumni from the population of all living alumni was taken. Sixty-four of the alumni in the sample were in favor of firing the coach.

<u><em>Let p = proportion of all living alumni who favored firing the coach</em></u>

SO, Null Hypothesis, H_0 : p = 0.50   {means that the majority of alumni are not in favor of firing the coach}

Alternate Hypothesis, H_A : p > 0.50   {means that the majority of alumni are in favor of firing the coach}

The test statistics that will be used here is <u>One-sample z proportion</u> <u>statistics</u>;

                                  T.S.  = \frac{\hat p-p}{{\sqrt{\frac{\hat p(1-\hat p)}{n} } } } }  ~ N(0,1)

where, \hat p  = sample proportion of the alumni in the sample who were in favor of firing the coach = \frac{64}{100} = 0.64

            n = sample of alumni = 100

So, <em><u>test statistics</u></em>  =  \frac{0.64-0.50}{{\sqrt{\frac{0.64(1-0.64)}{100} } } } }

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<u>Now, P-value of the hypothesis test is given by ;</u>

         P-value = P(Z > 2.92) = 1 - P(Z \leq 2.92)

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Therefore, the P-value for this hypothesis test is 0.00175.

4 0
3 years ago
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