3. A housewife wanted to know which soil is best for her pechay plants: the soil purchasedfrom an online seller, soil from her backyard compost or the soil underneath the nearbybamboo tree. She planted 30 pechay seeds into each soil source and then compared thegrowth of pechay after a month.Independent variable:Dependent variable:Extraneous variable:4. Jenny is only borrowing the cellphone chargers of her brother, sister and mother becauseshe lost her phone charger. All chargers are of the same specifications as hers eventhough they have different phone brands. However, she would like to know which chargerand charging cable combination would fill her phone battery the fastest. She used thefollowing codes as her reference and charged her phone uninterrupted using the followingcombination. The charging time of the phone was then compared.Brother's Charger: BBBrother's Cable: bbSister's Charger: SSSister's Cable: ssMother's Charger: MMMother's Cable: mmCombination ChargingtimeCombination ChargingtimeCombination ChargingtimeMMmmBBbbBBSSBBmmSSssSSbbSSmmIndependent variable:Dependent variable:Extraneous variable:5. A teacher wanted to know which learning delivery modes (pure online, pure modular,combination of online and modular) is most effective and has the fastest turnaround timein the submission of accomplished activities among her Grade 12 students. She dividedthe students into 3 groups, gave them the same activity sheets and asked them to submitas soon as it is completed. She then compared the scores and completion time of the 3groups.Independent variable:Dependent variable:Extraneous variable:

“Since you have asked multiple questions, we will solve the first question for you. If you want any…

Answered: 3. A housewife wanted to know which…

A First Course in Probability (10th Edition)

10th Edition

ISBN:9780134753119

Author:Sheldon Ross

Publisher:Sheldon Ross

Chapter1: Combinatorial Analysis

Section: Chapter Questions

Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...

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The relative effectiveness of two different sales techniques was tested on 12 volunteer housewives. Each housewife was exposed to each sales technique and asked to buy a certain product, the same product in all cases. At the end of each exposure, each housewife rated the technique with a 1 if she felt she would have agreed to buy the product and a 0 if she probably would not have bought the product. Tech 1 2 3 4 1 1 1 2 0 1 1 1 1 0 5 6 7 8 9 10 1 Housewife 0 0 0 0 0 Test Ho: P₁=p₂ versus H₂: P₁ P₂ Use large sample approximations and compare results. 0 0 1 1 1 0 11 12 01 0 1 a) Use Cochran's test b) Rearrange the data and use McNemar's test c) use Fischer exact test d)Ignore the blocking effect in this experiment and treat the data as if 24 difference housewives were used.
A professor in a university is trying to conduct a research study. His study is trying to determine if his 8 am lecture is more interactive with him than his 2 pm lecture. What is the independent variable? How many levels are there for the independent variable? What is the dependent variable?
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Suppose that, as part of a research methods class, Bailey was asked to write a summary of a research paper on the topic of the effects of visitor traffic on the relative humidity in bat caves. Identify the explanatory and the response variables. The number of visitors and the relative humidity are the response variables. The number of visitors is the response variable, and the relative humidity is the explanatory variable. The number of visitors and the relative humidity are the explanatory variables. The number of visitors is the explanatory variable, and the relative humidity is the response variable.
Cellulon, a manufacturer of home insulation, wants to develop guidelines for builders and consumers on how the thickness of the insulation in the attic of a home and the outdoor temperature affect natural gas consumption. In the laboratory, it varied the insulation thickness and temperature. A few of the findings are: Monthly Natural Gas Consumption (cubic feet), Thickness of Insulation (inches), Outdoor Temperature (ºF), y x1 x2 30.3 6.0 40.0 24.2 12 40 27.9 8 49 On the basis of the sample results, the regression equation is: yˆy⁢^⁢ = 56.26 − 0.66x1 − 0.59x2 How much natural gas can homeowners expect to use per month if they install 6 inches of insulation and the outdoor temperature is 40 degrees F? (Round your answer to 2 decimal places.) What effect would installing 7 inches of insulation instead of 6 have on the monthly natural gas consumption (assuming the outdoor temperature remains at 40 degrees F)? (Round your answers…
Elaine is interested in determining if men are more satisfied in their jobs than women in the healthcare industry. She administers a job satisfaction questionnaire to 20 men and 20 women working in hospital administration. Her grouping variable is gender and dependent variable is job satisfaction. The job satisfaction scale consists of 8 items measured using a 5-point rating scale. A higher score on this scale would indicate high job satisfaction. The maximum score that can be obtained on the scale is 40. We can assume that job satisfaction scores are normally distributed. Use the appropriate T test with a significance level of 0.05 to test the hypothesis. Research Question Do the mean job satisfaction scores differ for men and women working in the hospital administration department? Hypothesis The mean job satisfaction scores do not differ for men and women working in the hospital administration department. Compute an independent sample t test on these data. Report…

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