Chapter 14, Problem 14.8P

A study investigated whether price affects people's judgment. Twenty people each tasted six cabernet sauvignon wines and rated how they liked them on a scale of 1 to 6. Prior to tasting each wine, participants were told the price of the wine. Of the six wines tasted, two were actually the same wine, but for one tasting the participant was told that the wine cost $10 per bottle and for the other tasting the participant was told that the wine cost $90 per bottle. The participants were randomly assigned either to taste the $90 wine first and the $10 wine second, or the $10 wine first and the $90 wine second. Differences were calculated by subtracting the rating for the tasting in which the participant thought the wine cost $10 from the rating for the tasting in which the participant thought the wine cost $90. Difference ($90 3 4 $10) 2 1 USE SALT 0 3 0 2 1 3 3 1 4 1 2 Find the test statistic. (Round your answer to two decimal places.) t = 2 1 -1 Carry out a hypothesis test to determine if…

Dr. Loras Tyrell was curious to see if his students actually saved money by purchasing books from sources other than the college bookstore. He administered a survey to all his students asking how they obtained their book (Bookstore, Rented, ebook, or on the web – WebBooks) and how much they paid for the book. He obtained the information below.  If the values for web-books are normally distributed, we know that of the students who purchased their book on the web (WebBooks), about 68.3% of those students paid approximately $----- to ----?

I need help figuring this out.

A small coffee shop sells freshly squeezed juices in a refrigerated unit with slots where juice is displayed. These slots are called facings. The manager of the coffee shop suspects that the distribution of juice sales is different than the distribution of facings for each type of juice, so the manager records the sales of each juice over a two-week period. The proportion of facings and the sales for each type of juice are shown in the tables.  Does the coffee shop owner have sufficient evidence to conclude that the distribution of sales is proportional to the number of facings at a 5 percent level of significance? Conduct the appropriate statistical test to support your conclusion.

Need help with this problem. It is believed that large doses of acetaminophen (the activeingredient in over the counter pain relievers like Tylenol) may cause damage to the liver. A researcherwants to conduct a study to estimate the proportion of acetaminophen users who have liver damage. Forparticipating in this study, he will pay each subject $20 and provide a free medical consultation if the patienthas liver damage.(a) If he wants to limit the margin of error of his 98% confidence interval to 2%, what is the minimumamount of money he needs to set aside to pay his subjects?(b) The amount you calculated in part (a) is substantially over his budget so he decides to use fewer subjects.How will this affect the width of his confidence interval?

In a medical study, two groups had the following summary statistics regarding their heights. Group A:x- 168 3 cm, r-682 cm Group B: x-1639 cm, -714 cm Which comparison is correct? The members of group A are taller on average and their heights are less spread out than those of group B. The members of group A are shorter on average and their heights are less spread out than those of group B. A The members of group A are shorter on average and their heights are more spread out than those of group B. The membrs of groupA are talier en average and their heights are more spread out than those cf group B.

If the median house price is $1.9m, does that necessarily mean that half of the houses on the block areworth less than $1.9m and half worth more?

Twenty percent of anthropology majors were offered a starting salary greater than .

A friend who lives in Los Angeles makes frequent consulting trips to Washington, D.C.;50% of the time she travels on airline #1, 30% of the time on airline #2, and the remaining 20% of the time on airline #3. For airline #1, flights are late into D.C.30% of the time and late into L.A.10% of the time. For airline #2,these percentages are 25% and 20%,whereas for airline #3 the percentages are 40% and 25%.If we learn that on a particular trip she arrived late at exactly one of the two destinations, what are the posterior probabilities of having flown on airlines #1,#2, and #3? Assume that the chance of a late arrival in L.A.is unaffected by what happens on the flight to D.C. [ Hint: From the tip of each first­ generation branch on a tree diagram, draw three second-generation branches labeled, respectively, 0 late,1late, and 2 late.]