Clare wants to test whether a new educational programme can help students in a classroom learn how to make fewer spelling mistakes. She wants to use a small-N design. Which design is most appropriate based on this information? O a. Pretest-posttest design O b. ABAB withdrawal design O c. Alternating treatment design O d. Multiple baseline design across participants

Imagine that you own a coffee shop in downtown Toronto. You think it's time to expand to a second location in a different part of the Greater Toronto Area. However, you need to make sure that the second location you have selected will be as popular with customers as your current location. You want to do a survey. You know you can't ask everyone, so you need to ask a sample. PART 1: What process should you follow to select your sample? choices are simple, systematic, stratified, and cluster sampling. PART 2: What is the best way to administer your survey to make sure you get enough responses to give you a good representative sample?

%24 design anu . LA researcher conducts an experiment comparing two condition. a. If an independent-measures design is used, how many subjects are needed for the experiment? b. If a repeated-measures design is used, how many subjects are needed for the experiment? c. If a matched-subjects design is used, how many subjects are needed for the experiment? 4. A an two treatment with 20 in each treatment

K Do cars get better gas mileage with premium instead of regular unleaded gasoline? It might be possible to test some engines in a laboratory, but we'd rather use real cars and real drivers in real day-to-day driving, so we get 20 volunteers. Design the experiment. ... Determine how the experiment should be carried out. Choose the correct answer below. OA. Have each volunteer use different kinds of gas depending on the trip. Use premium for highway and use regular for back roads. B. Have each of the volunteers use each kind of gas for a month. Randomly assign 10 of them to use regular first and the other 10 to use premium first. OC. Have each volunteer only use one kind of gas for the duration of the experiment. Assign 10 to only use regular and 10 to only use premium. OD. Have 10 of the volunteers not drive their cars and have the remaining 10 volunteers use different types of gasoline, on various roads. Identify the factors, levels, and variables of the experiment. This experiment…

4.49 Couldn’t fit the whole chart but the last one is Vermont and the numbers are 11 and 6

You are the operations manager for an airline and you are considering a higher fare level for passengers in aisle seats. How many randomly selected air passengers must you survey? Assume that you want to be 95% confident that the sample percentage is within 5.5 percentage points of the true population percentage. Complete parts (a) and (b) below. a. Assume that nothing is known about the percentage of passengers who prefer aisle seats. (Round up to the nearest integer.) b. Assume that a prior survey suggests that about 33% of air passengers prefer an aisle seat. n3= (Round up to the nearest integer.)

You are the operations manager for an airline and you are considering a higher fare level for passengers in aisle seats. How many randomly selected air passengers must you survey? Assume that you want to be 90% confident that the sample percentage is within 5.5 percentage points of the true population percentage. Complete parts (a) and (b) below. a. Assume that nothing is known about the percentage of passengers who prefer aisle seats. (Round up to the nearest integer.) b. Assume that a prior survey suggests that about 38% of air passengers prefer an aisle seat. (Round up to the nearest integer.)

A restaurant chain specializing in ice cream deserts contacted you to characterize the market for new franchise locations in Upstate NY. The firm is located in the Southwestern US, and has excellent experience there. However, they are opening a few test locations in Buffalo, Syracuse and Albany in the very near future, and have hired you, an Upstate NY statistical consultant, to collect and analyze the results. These restaurants follow a standard blueprint for design, operation, and location. They run a 2,150 sq foot facility in wealthier suburban areas, and usually locate in new plazas near other specialty restaurants that tend not to compete with them (Starbucks, Panera, Fridays, and similar restaurants.) Existing Southwestern locations take in an average of $82,000 a week in sales, with a highly reliable standard deviation of $5,200. Before deciding on their regional distribution strategy, the firm is opening three test restaurants, one in each city. They want you to examine the…

Please do not give solution in image format thanku

Net Worth. The Board of Governors of the Federal Reserve System publishes information on family net worth in the Survey of Consumer Finances. In 2010, the mean net worth of families in the United States was $498.8 thousand and the median net worth was $77.3 thousand. Which measure of center do you think is more appropriate? Explain your answer.