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pochemuha
3 years ago
15

Yasmine is serving ice cream with the birthday cake at her party she has purchased 7 1/2 pints of ice cream she will serve 3/4 o

f a pint to each guest how many guests can be serve ice cream.
Mathematics
1 answer:
vlada-n [284]3 years ago
8 0
7 1/2 is 7.5 and 3/4 is .75, so 7.5 divided by .75 is 10. 
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0.5027 square meters

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A farmer raises cows and chickens. The farmer has a total of 25 animals. One day he counts the legs of all of his animals and co
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Step-by-step explanation:

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6 0
2 years ago
You are conducting a study to see if the accuracy rate for fingerprint identification is significantly different from 0.4. You u
Ludmilka [50]

Answer:

a)

<em>Calculated Z -value = 2 < 2.326 at 0.02 level of significance</em>

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<em>b)</em>

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<em></em>

Step-by-step explanation:

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<em>Population proportion </em>

                          p = 0.4

<u><em>Null hypothesis</em></u> :-

<em>The accuracy rate for fingerprint identification is not significantly different from 0.4</em>

<em>H₀: p=0.4</em>

<u><em>Alternative Hypothesis :-</em></u>

<em>The accuracy rate for fingerprint identification is  significantly different from 0.4</em>

<em>H₁: p≠0.4</em>

<u><em>Step(ii):</em></u>-

<em>Test statistic</em>

               Z = \frac{p^{-} -P}{\sqrt{\frac{P Q}{n} } }

             Z = \frac{0.456-0.4}{\sqrt{\frac{0.4 X 0.6}{298} } }

             Z = 2

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<em>Calculated Z -value = 2 < 2.326 at 0.02 level of significance</em>

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<em>The accuracy rate for fingerprint identification is not significantly different from 0.4.  </em>

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<em>P( Z>2) = 1- P( Z <2)</em>

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<em>                                      = 0.0456</em>

<em>The p-value is 0.0456</em>

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