In order for a candy company to claim that a bridge mix is mostly chocolate stars, a proportion of at least 0.8 of the packages must contain 3 ounces or more of chocolate stars. Quality control tests a random sample of 50 packages to determine if the proportion is less than 0.8 at a significance level of 0.05.

p^=

z=

p=

Since the p-value is

evidence exists that the proportion of packages with 3 ounces or more of chocolate stars is less than 0.8.

than the significance level 0.05, the null hypothesis

.

Pick greater less

Pick fails to be rejected is rejected

Pick Sufficient Insufficient

Use Sheet 4 of the Excel file, which gives the weight of chocolate stars in each of the 50 packages, to calculate p^, the z-score, and the p-value.

2.872135593

4.24198017

3.117765233

3.680093849

3.580635014

2.991352353

3.204946313

2.248809787

3.468927776

3.592361668

3.065978205

2.161430242

3.789306361

4.181117625

3.280707522

3.340212114

3.563963347

3.708505769

4.246951043

3.492321218

3.111457906

2.973649755

3.589065657

3.350737027

2.609160781

2.610349631

3.946644508

2.791368639

3.237387936

3.44023892

2.533145769

3.803543636

3.052930729

2.960727524

3.848324872

3.731874648

3.017454462

3.787894693

3.22147616

2.953563056

2.490937533

3.774447596

3.055369831

3.678657835

2.183066901

3.088269573

2.834771155

3.573603005

3.282198085

3.623261245