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marissa [1.9K]
2 years ago
12

Concussions and Brain Size A recent study1 examined the relationship of football and concussions on hippocampus volume in the br

ain. The study included three groups with in each group: healthy controls who had never played football, football players with no history of concussions, and football players with a history of concussions. In this exercise, we test for evidence that average brain size is larger in football players who have never had a concussion (FBNoConcuss) than in football players with a history of concussions (FBConcuss). The data are in FootballBrain where the variable Hipp measures brain size as the volume of the hippocampus (in ml) for each subject. Let group be the football players with no concussion and group be the football players with a history of concussions.

Business
1 answer:
Gwar [14]2 years ago
5 0

Answer:

Part A: Null hypothesis. H₀: M₁ = M₂

Alternative hypothesis, H₁ : M₁ > M₂

Part B: x1-x2 = 6459-5735 = 724

Part C: p-value = 0.000

Part D: No, the difference in brain size is not due to random chance

Explanation:

See attached image

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Answer:

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Explanation:

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Carmen’s Dress Delivery operates a mail-order business that sells clothes designed for frequent travelers. It had sales of $400,
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Answer:

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8 0
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Consider a fast food café of your choice. Apply 4 V’s of Operation. Describe each V as ‘High’, ‘Low’ or ‘Moderate’ with one line
Marrrta [24]

Answer:

4 V's of Operation

The 4 V's of operation are Volume, Variety, Variation, and Visibility.  Let us take Mrs. Happy Food Cafe with over 100 outlets in Fiacton Town, as an example to illustrate the 4 V's of operation.

Volume: As a food cafe, the volume of production that will be required for some foods and drinks is so high that their provision requires repetitive tasks.  Based on this, procedures are normally standardized in order to achieve low cost for foods and drinks.  However, it is harder to standardize services, since personal touches are added by the servers based on their individual perceptions and abilities.

Variety: Mrs. Happy Food Cafe tries to bring some variety in her offerings to satisfy the various needs of her customers.  While variety is naturally low in the Food Cafe sector, some cafes like Mrs. Happy Good Cafe, try to satisfy customers' demands by varying the foods with Continental, African, Latino cuisines and dishes.

Variation: At Mrs Happy Food cafes, the food and drinks do not vary much as customers expect to be served the same quality of services at any of their cafes.  This is because the processes are standardized to achieve low cost.  So, the variation is moderate.

Visibility: Customers of Mrs Happy Food cafes are not able to see and track their experiences of the the processes for the food preparation that they order.   But, they can track the processes for the services because services are consumed as they are offered.  So, visibility is 'Moderate," as it is divided between the hard goods and the soft goods.  With respect to goods visibility is 'Low.'  However, with respect to the services the customers' visibility of processes is high.

Explanation:

The 4 V's of operation describe the different characteristics of the processes that various entities use to transform their inputs into outputs of goods and services.  They may be high, low, or moderate.  They include, volume, variety, variation, and visibility.

7 0
2 years ago
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