Cathy designs an experiment to investigate how well cups made of different materials maintains thetemperature of a cold drink. Which step will increase the accuracy and validity of Cathy’s results?Group of answer choicesUse a different beverage in each cupConduct the experiment in a cool roomConduct multiple trials and have another scientist repeat the experimentAnalyze the experimental results and organize experimental data in a table

Cathy hypothesizes that plastic foam insulates cold drinks better than metal or ceramic materials do. To testthe hypothesis, she fills cups made from these materials with equal amounts of cold water. She records thetemperature of the water in each cup, using scientific thermometers, every 10 minutes until the waterreaches room temperature. Which of these conditions must be the same for this experiment to be valid?Group of answer choicesThe thermometer that is in each cupThe material of each cupThe ending temperature of the water in each cupThe starting temperature of the water in each cup PreviousNext

Houtan has designed and carried out a food tests investigation. He now wants to ensure his results are reproducible.Which one of the following should Houtan now do to show reproducibility in this experiment?Repeat using same method and equipment, then compare results to see if they are similar.Compare results against other students using different method and see if they are similar.Compare results against other students using the same method and see if they are similar.Repeat using different method and equipment, then compare results to see if they are similar.I DON'T KNOWSUBMIT ANSWER

Sarah is a researcher at a children's psychiatric center. Her office has just been asked to conduct a pilot study on a new prescription medication used to treat anxiety called Drug X. Sarah wants to figure out if Drug X causes a reduction in anxiety-like the drug company claims. How can Sarah answer this question through a true experiment? Group of answer choicesSarah needs to randomly assign half of her participants to the treatment group and half to a control group for her studySarah needs to conduct a field experiment and should not worry about the random assignment of participants.Sarah needs to randomly assign her participants, and she must only conduct her study at different stages of participants’ lives.

The drinks manufacturer wants to advertise the effect of the drink on reaction time.The manufacture needs to confirm the effect on reaction time by improving theinvestigation.Give two improvements the manufacturer would need to make to this investigation

What is generally the BEST way to measure accuracy in a set of laboratory results?Group of answer choicesModeStandard deviationMedianMean