# Testing of hypothesis

See attached files.

A researcher would like to determine whether humidity can have an effect on eating behavior. It is known that under regular circumstances, laboratory rats eat an average of Âµ = 10 grams of food each day. The researcher selects a random sample of n=15 rats and places them in a controlled atmosphere room where the relative humidity is maintained at 90%. The daily food consumption for each of these rats is as follows:

Food Consumption

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9.1 8.3 7.6 10.2 8.4

6.9 9.3 10.7 11.2 9.8

8.5 12.1 8.4 7.7 9.2

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Calculate in written form using the attached table then place into a Microsoft Excel output.

1. State an appropriate null hypothesis

2. Indicate the level of significane

3. Identify the critical value

4. Calculate the test statistic

5. Evaluate the test statistic in light of the critical value

6. Make a decision about the null hypothesis

https://brainmass.com/statistics/hypothesis-testing/state-appropriate-null-hypothesis-428142

#### Solution Preview

Please see the attached Excel File which contains the answer.

A researcher would like to determine whether humidity can have an effect on eating behavior. It is known that under regular circumstances, laboratory rats eat an average of Âµ = 10 grams of food each day. The researcher selects a random sample of n=15 rats and places them in a controlled atmosphere room where the relative humidity is maintained at 90%. The daily food consumption for each of these rats is as follows:

Food Consumption

9.1

8.3

7.6

10.2

8.4

6.9

9.3

10.7

11.2

9.8

8.5

12.1

8.4

7.7

9.2

Calculate in written form using the attached table then place into a Microsoft Excel output.

Sample Mean and standard deviation

X= X 2 ...

#### Solution Summary

Tests the hypothesis whether humidity can have an effect on eating behavior.