Identify the independent and dependent variable: question 1: a study was conducted to determine whether when...

Identify the independent and dependent variable:

question 1: a study was conducted to determine whether when a restaurant server drew a happy face on the check, that would increase the amount of tip.

question 2: a study was conducted to determine if the marital status of an individual had any effect on the cause of death of the individual.

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question 3: suggest some cofounding variables that the researcher might want to consider when doing a study

question 4: psychology today magazine reports that the more intelligent a person is (based on IQ,) the more willing the person is to make a cooperative choice rather than a selfish one.

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Expert Solution

Independent, dependent and confounding variables

milcah answered 1 year ago

In each of the following situations, identify the independent variable and dependent variable. Determine whether the...

In each of the following situations, identify the independent variable and dependent variable. Determine whether the growth is linear or exponential and explain why by the definition of linear and exponential growth (Do not present the table) a) The price of gasoline has been rising 2% per month. b) The total cost of a taxi ride increases by $ 5 per 2 miles. c) The population of a bacteria is double every 20 hours.

Identify the independent and dependent variable.

A researcher is studying relationship between speed of cycling and the presence of people. Formulate a relevant hypothesis and identify the independent and dependent variable.

For Exercises 49–52, identify the independent and dependent variables for each study. 49.A study was conducted...

For Exercises 49–52, identify the independent and dependent variables for each study. 49.A study was conducted to determine if crocodiles raised in captivity (i.e., in a zoo) grew faster than crocodiles living in the wild. Identify the explanatory variable and the outcome variable. 50.People who walk at least 3 miles a day are randomly selected, and their blood triglyceride levels are measured in order to determine if the number of miles that they walk has any influence on these levels....

1-Identify the independent variable 2-Identify the dependent variable 3-Identify the control group

CO: 13, 15, 11, 8, 15, 16, 12,14 Control: 8, 9, 13, 7, 8, 6, 10, 11 1-Identify the independent variable 2-Identify the dependent variable 3-Identify the control group 4-Calculate the means for each group ( CO, and control) I5-ndicate the ranges for each group ( CO, and control) 6-Indicate the medians for each group ( CO and control) 7-Indicate the mode for each group ( CO, and control) 8-Calculate the standard deviation for each group ( CO and control)?...

Identify the dependent variable and the independent variable (or variables) and comment on the validity of...

Identify the dependent variable and the independent variable (or variables) and comment on the validity of the implied causal relationship: A study that looks at students’ college GPAs and how they are affected by the students’ number of weekly study hours, high school GPA, and number of weekly hours of extra-curricular activities. A young pitcher wants to understand how she can improve her pitches. She collects data on the number of strikes thrown in a pitched game, the average number...

. Identify the independent variable, dependent variable and direction of the hypotheses. a) The higher the...

. Identify the independent variable, dependent variable and direction of the hypotheses. a) The higher the income, the less likely a person will vote Republican. b) The more often a student attends class, the higher the student’s score on the final exam. c) The smaller the automobile’s engine, the higher the automobile’s gas mileage. d) If an undergraduate student visits an advisor for course scheduling, the more likely the student will graduate within four years. e) The more spinach...

part 1 An independent measures study was conducted to determine whether a new medication called "Byeblue"...

part 1 An independent measures study was conducted to determine whether a new medication called "Byeblue" was being tested to see if it lowered the level of depression patients experience. There were two samples, one that took ByeBlue every day and one that took a placebo every day. Each group had n = 30. What is the df value for the t-statistic in this study? a. 60 b. 58 c. 28 d. There is not enough information part 2. Engineers must...

For the following variables, identify which is the Independent Variable and the Dependent Variable. Then create...

For the following variables, identify which is the Independent Variable and the Dependent Variable. Then create a hypothesis (be sure to also include the direction of the relationship) and then create a null hypothesis. Temperature and crime rates Hours studied and test scores Number of police officers and crime rate

Identify the independent variable, the dependent variable, and the unit of analysis in the following hypothesis:...

Identify the independent variable, the dependent variable, and the unit of analysis in the following hypothesis: a. Interstate migration in the United States lowers state poverty levels. b. Documented immigrants in the United States are less likely than undocumented immigrants to use social welfare programs. c. On average, the annual household income of female-headed households is about 25% less than the annual household income of married couple households. d. Geographically, contiguous countries should experience higher rates of migration than noncontiguous...

Fill in the blanks with whether the variable is “independent” or ‘dependent”. A scientist studies the...

Fill in the blanks with whether the variable is “independent” or ‘dependent”. A scientist studies the impact of a drug on cancer. The ___________ variables are the administration of the drug - the dosage and the timing. The ____________ variable is the impact the drug has on cancer. A scientist studies the impact of withholding affection on rats. The ____________ variable is the amount of affection. The ____________ variable is the reaction of the rats. A scientist studies how many...

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