Question
In: Statistics and Probability
6. A local brewery produces three premium lagers named Half Pint, XXX, and Dark Night. Of...
6. A local brewery produces three premium lagers named Half Pint, XXX, and Dark Night. Of its premium lagers, they bottle 40% Half Pint, 40% XXX, and 20% Dark Night lagers. In a marketing test of a sample of consumers, 38 preferred the Half Pint lager, 32 preferred the XXX lager, and 10 preferred the Dark Night lager. Using a chi-square goodness-of-fit test, decide to retain or reject the null hypothesis that the production of the premium lagers matches these consumer preferences using a 0.05 level of significance.
- State the value of the test statistic. (Round your answer to two decimal places.)
- State the decision to retain or reject the null hypothesis.
7. A psychologist studying addiction tests whether cravings for cocaine and relapse are independent. The following table lists the observed frequencies in the small sample of people who use drugs.
| Obs. Freq. | Relapse | |||
|---|---|---|---|---|
| Yes | No | |||
| Cravings | Yes | 20 | 10 | 30 |
| No | 8 | 18 | 26 | |
| 28 | 28 | N = 56 | ||
Part A) Conduct a chi-square test for independence at a 0.05 level of significance. (Round your answer to two decimal places.)
Decide whether to retain or reject the null hypothesis.
Part B) Compute effect size using ϕ and Cramer's V. Hint: Both should give the same estimate of effect size. (If necessary, round your intermediate steps to two or more decimal places. Round your answers to two decimal places.)
| ϕ | = | |
| V | = |
Solutions
orchestra answered 1 year agoRelated Solutions
A local brewery produces three premium lagers named Half Pint, XXX, and Dark Night. Of its...
A local brewery produces three premium lagers named Half Pint,
XXX, and Dark Night. Of its premium lagers, they bottle 40% Half
Pint, 40% XXX, and 20% Dark Night lagers. In a marketing test of a
sample of consumers, 41 preferred the Half Pint lager, 26 preferred
the XXX lager, and 13 preferred the Dark Night lager. Using a
chi-square goodness-of-fit test, decide to retain or reject the
null hypothesis that production of the premium lagers matches these
consumer preferences...
A local brewery produces three premium lagers named Half Pint, XXX, and Dark Night. Of its...
A local brewery produces three premium lagers named Half Pint,
XXX, and Dark Night. Of its premium lagers, they bottle 40% Half
Pint, 40% XXX, and 20% Dark Night lagers. In a marketing test of a
sample of consumers, 29 preferred the Half Pint lager, 40 preferred
the XXX lager, and 11 preferred the Dark Night lager. Using a
chi-square goodness-of-fit test, decide to retain or reject the
null hypothesis that production of the premium lagers matches these
consumer preferences...
A local brewery produces three premium lagers named Half Pint, XXX, and Dark Night. Of its...
A local brewery produces three premium lagers named Half Pint,
XXX, and Dark Night. Of its premium lagers, they bottle 40% Half
Pint, 40% XXX, and 20% Dark Night lagers. In a marketing test of a
sample of consumers, 35 preferred the Half Pint lager, 36 preferred
the XXX lager, and 9 preferred the Dark Night lager. Using a
chi-square goodness-of-fit test, decide to retain or reject the
null hypothesis that production of the premium lagers matches these
consumer preferences...
To provide three examples of how global, regional and local problems can affect the environment. half...
To
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The House of Manji produces three products named; Cookies; Biscuits and Weetabix whose financial data is...
The House of Manji produces three products named; Cookies;
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Cookies
Biscuits
Weetabix
Total
Sales
1,150,000
1,540,000
1,350,000
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Cost of goods sold:
Direct materials
423,000
507,000
378,000
1,308,000
Direct labour
392,000
413,000
353,000
1,158,000
Variable selling expenses
195,000
130,000
147,000
472,000
Fixed overhead expenses
705,280
Net income
396,720
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assembly lines, “Razor,” “Blazer,” and “Tracer,” named after the
particular dune buggy models produced on those lines. Each assembly
line was originally designed using the same target production rate.
However, over the years, various changes have been made to the
lines. Accordingly, management wishes to determine whether the
assembly lines are still operating at the same average hourly
production rate. Production data (in dune buggies/hour) for the
last eight hours are as...
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particular dune buggy models produced on those lines. Each assembly
line was originally designed using the same target production rate.
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