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maxonik [38]
3 years ago
11

Paula sold 35 packages of wrapping paper for this years booster club fundraiser. This is one less than twice the number of packa

ges that she sold last year. How many packages did Paula sell last year?
Mathematics
1 answer:
Novosadov [1.4K]3 years ago
6 0
X=packages sold last year
(35-1)/2=X
35-1=34
34/2=17
17 packages were sold last year
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a. We get 56 heads out of 100 tosses.

We will use one sample proportion test  

x = 56

n = 100

\widehat{p}=\frac{x}{n}

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Formula of test statistic =\frac{\widehat{p}-p}{\sqrt{\frac{p(1-p)}{n}}}

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refer the z table for p value

p value = 0.8849

a.  We get 560 heads out of 1000 tosses.

We will use one sample proportion test  

x = 560

n = 1000

\widehat{p}=\frac{x}{n}

\widehat{p}=\frac{560}{1000}

\widehat{p}=0.56

Formula of test statistic =\frac{\widehat{p}-p}{\sqrt{\frac{p(1-p)}{n}}}

                                       =\frac{0.56-0.5}{\sqrt{\frac{0.5(1-0.5)}{1000}}}

                                       =3.794

refer the z table for p value

p value = .000148

p value of part B is less than Part A because part B have 10 times the number the tosses.

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3 years ago
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