Researchers from Gallup used a random sample of n = 1503 adults in the US who were asked whether they drove a car every day of the week.  The proportion who said “yes” was 0.62 with a margin of error of 0.04. What is the correct calculation for the interval estimate for the population proportion who drove a care every day of the week?

Researchers test the provided hypotheses about two variables: ‘Favorite type of Apple’ (Red Delicious, Granny Smith, Honeycrisp, Empire, Gala) and ‘Time Zone where you Live: ‘(Pacific, Mountain, Central, Eastern) when based on a sample of n = 200 U.S. adults. H0: There is no association between favorite type of apple and time zone where you live. Ha: There is an association between favorite type of apple and time zone where you live Assume the researchers calculated a p-value of 0.246.  What is the correct conclusion for this hypothesis test using a significance level of 0.05?

Researchers surveyed n = 25 stat 200 male students to determine if they consume 3 or more alcoholic beverages per week. Their goal was to see if more than 50% of male students consume 3 or more alcoholic beverages per week. The relevant sample statistic is 0.60 (60%) with a standard error of 0.10.  The p-value is 0.159. Correctly complete the p-value interpretation below: The chance of seeing a test statistic of = or any value is , if in fact the hypothesis is true.

Research Question:  What percent of Stat 200 students regularly complete the lab worksheet prior to their scheduled lab class?    The parameter of interest is a . To answer this question, we should .  

Consider the StatKey output below that provides a bootstrap distribution for the mean     Use all provided information. The normal approximation of this bootstrap distribution is: N(μ=, σ=) .

Research Question: Are dog owners more likely to be extroverted when compared to cat owners? The parameter of interest is a . To answer this question, we should .  

Consider the three situations below: Situation A: Compare the proportion of CATA bus drivers who have seniority status to the proportion of CATA bus drivers who have been employed for less than one year Situation B: Compare the proportion of PSU alumni who have given back to the university to the proportion of PSU alumni who have never given back to the university Situation C: Compare the proportion of Google employees who work remotely to the proportion of Facebook employees who work remotely. Match each situation to the correct comparison:

Consider the StatKey output below that provides a bootstrap distribution for the difference in proportions:   Use all provided information. The normal approximation of this bootstrap distribution is: N(

Does reintroducing wolves into an ecosystem improve the overall health of the system (as measured by species richness)? A team of ecologists tested this on 30 different forested parks. Assume the researchers performed an experiment and calculated a p-value of 0.019.  Complete the statements below: Using a significance level of 0.05, the researchers should the null hypothesis. It is possible that they have committed a type error.

A researcher wants to answer the question: Do used Subaru Foresters cost more in Washington State than they do in Tennessee, on the average?  The researcher randomly chooses 20 used Foresters for sale in Washington State and randomly chooses 20 used Foresters for sale in Tennessee. The asking price (in thousands of dollars) and state are recorded for each car. The researcher used the data to create the randomization distribution below:   Decide whether each of the statements below is true or false when considering all provided information.