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In the Newsvendor Model, the in-stock probability cannot be greater than the critical ratio.

Simplify (b(b8))3.

Left untreated, algae in a reservoir reproduce at the rate of 5% per week. Currently, the algae cover one eighth of the reservoir. An algebraic model of this situation is , where  is the percent covered after w weeks. What does 0.125 represent in this situation?

The general equation that models radioactive decay of a substance is , where t is the time in years, H is the half-life, and A(t) is the radioactivity of the substance today. Scientists found bones at an archaeological dig that they hypothesized to be about 7000 years old and used Carbon-14, which has a half-life of 5730 years, to determine the age of the bones. What percent of the present-day radioactivity would the tools emit if the scientists’ hypothesis were true?  

Determine the value of h that makes the following a true statement:

L’année dernière, nous [verbe1] (to leave) en vacances sur la Côte d’Azur. Nous [verbe2] (to take} l’avion à San Diego et nous [verbe3] (to arrive) à Paris, à l’aéroport Charles de Gaulle. Mon amie Anne [verbe4] (to wait) nos bagages et elle [verbe5] (to come) nous prendre à la douane. Beaucoup de français [verbe6] (to return) en France et ils [verbe7] (to finish) leurs vacances. Mais, nous [verbe8] (to begin) nos vacances! Anne [verbe9] (to go down) chez ses parents, à Macon. Nous [verbe10] (to visit) le Louvre le week-end suivant.

A plastic surgeon is looking to update his website. A new company is claiming he should invest with them, because they have less variability than the typical plastic surgeon in terms of website traffic by day.   The typical plastic surgeon has swings in the daily standard deviation of their website traffic of 135 clicks per day.  The new company claims that based on a sample of 12 other companies they’ve worked with, they have a standard deviation of 99 clicks.    a) At the 5% significance level, test whether their clicks are in fact below the national standard deviation level of 135. b) Create a 95% confidence interval for the daily clicks based on the sample of 12 companies.

A plastic surgeon is looking to update his website. A new company is claiming he should invest with them, because they have less variability than the typical plastic surgeon in terms of website traffic by day.   The typical plastic surgeon has swings in the daily standard deviation of their website traffic of 135 clicks per day.  The new company claims that based on a sample of 12 other companies they’ve worked with, they have a standard deviation of 99 clicks.    a) At the 5% significance level, test whether their clicks are in fact below the national standard deviation level of 135. b) Create a 95% confidence interval for the daily clicks based on the sample of 12 companies.

There are four students running for student government. Below are the counts of votes each candidate received by the students in the four different class years.  At the 5% significance level, do the data provide sufficient evidence to conclude that a difference exists in the mean number of votes among the four candidates?   Please complete an anova table.   Class Year Brett Leon Eric Ishan Freshman 95 51 58 48 Sophomores 49 50 40 16 Juniors 88 76 12 37 Seniors 96 84 10 75   Samples Statistics Brett Leon Eric Ishan Sample Standard Deviations                22.3             17.3             23.2             24.6 x-bar                77.3             59.0             36.7             33.7 n: 4 4 4 4