question 2

Jenae changed the original coffee labels with plain white ones that had the flavor printed in bold black letters, and she placed them on the coffee pots for the week-long experiment. Jenae used an aspect of experimental design known as when she created the labels to have the same appearance. 0 a treatment 0 a control 0 replication 0 randomization \fWhich of the following symbols represents a statistic? O o Op OPO Nonresponse bias There is no evidence of bias in the way this survey is carried O out. O Selection bias O Response biasThe owner of a new store on Main Street wants to turn the boulevard outside into extra parking spaces because she is concerned about parking availability. She randomly selects 500 residents of the town to take a survey, and these individuals have confirmed their participation. One of the survey questions reads, "Many residents believe the lack of available parking on Main Street is a major problem, and extra spaces along the boulevard would help. Do you agree?" The store owner's survey could suffer from which type of bias?Which of the following is a guideline for establishing causality? Look for cases where correlation exists between the O variables of a scatterplot. O Do not consider other possible causes. O Check if the effect is present or absent when the response variable is present or absent. O Keep all variables the same to get duplicate results.A researcher has a table of data with 5 column variables and 4 row variables. The value for the degrees of freedom in order to calculate the x2 statistic is 012 019 020 If Rhonda is taking four credits for the fall semester, how many hours per week will she study? 0 8 Rhonda is wondering if there is an association between the number of hours she studies per week and the number of semester credits she is enrolled in. The information is shown in the table below. Study Table K 9 8 6 Study-Hours 4 - N W O X n O inGoing to a local high school and asking the principal for information about students' current and previous grades, then interviewing a random selection of students about their eating habits. Going to a local high school and asking the principal for information about students' previous grades, then interviewing a random selection of students about their eating habits. Going to a local college and asking current undergraduates to report their grades and eating habits from high school. Going to a local high school and asking the principal for information about students' current and previous grades, then asking the health teacher for the results from a survey students took in health class. Jay wants to study nutrition and performance in schools using available data. Which of the scenarios below will provide Jay with available data? For a large enough sample size, the Central Limit Theorem states that the sample means of repeated samples of a population are normally distributed. For a large enough sample size, the Central Limit Theorem states that the sample medians of repeated samples of a population are normally distributed. Even with a very large sample size, the Central Limit Theorem states that the sample means of repeated samples ofa population cannot be normally distributed. For the Central Limit Theorem to be true, you must have a large sample, the underlying population must be normally distributed, and the standard deviation should not be finite.