10. Find whether A and B are independent in the following cases : (AB) = 256 ; (aB) = 768 ; (AB) = 48; (aß) = 144 %3D

Q: 4. If the sale of ice cream and pizza are independent, then as ice cream sales decrease by 60…

A: Given that  The sale of ice cream and Pizza are independent . The ice cream sales decrease by 60%…

Q: a. What are the estimated sales for the Bryne store, which has four competitors, a regional…

A: “Since you have posted a question with multiple sub-parts, we will solve first three subparts for…

Q: Use the figure to the right, which shows the percentages of adults from several countries who favor…

A: For country C n=1024,p hat =0.45 For country D n =1078 ,p hat = 0.41

Q: A recent poll of 800 people who work indoors found that 208 of them smoke. If the researchers wnat…

A: The sample proportion can be calculated as: p=x/n=208/800=0.26 At a 98% confidence level, the z…

Q: The manager of a big corporation finds out that on average, 40% of sick days are logged on Mondays…

A: Employees register 40% of sick days on Mondays and Fridays.  Now, we know, if Saturday and Sunday…

Q: 2. How many female rabbits are required in the population for at least 13 offspring (R) to survive?

A: Given that R=13 Find F? R=3+(350F)/(F+625)

Q: The U.S. Air Force requires that pilots have heights between 64in and 77in. The heights of women are…

A: Obtain the percentage of woman meeting the height requirement. The percentage of woman meeting the…

Q: he number of stores that must be sampled is

A: Given : Margin of error=E=0.05 Significance level=α=0.10 Our aim is to find the number of stores…

Q: Worker1 makes $30 an hour, and worker2 makes $50,000 per year. Assuming they both work "9 to 5" type…

A: worker 1 works 8 hours daily.  He makes $30 per hour. Therefore, makes 30×8=240 per day. Therefore,…

Q: 5. Suppose that, after five years of use, 45% of tablet computers have problems with the camera, 30%…

A: Solution

Q: Use the table below to answer this quesiton:   Leukemia  No leukemia  Exposed to benzene…

A: Relative risk: Relative risk is the ratio of probability of an event in exposed group to probability…

Q: A electronics retailer list the sales (in thousands) of certain products in three cities for the…

A: If the price of one unit is p, then the price of x units is x×p. We need to determine the sale for…

Q: Use the figure to the right, which shows the percentages of adults from several countries who favor…

A:

Q: If the pipette is set to dispense 200 microliters, what percentage of time will it dispense greater…

A:

Q: In a sample of 45 men, 27 said that they had less leisure time today than they had 10 years ago. In…

A:

Q: Use the figure to the right, which shows the percentages of adults from several countries who favor…

A:

Q: Use the figure to the right, which shows the percentages of adults from severa power plants in their…

A: Null hypothesis: H0: pl=p2 Alternative hypothesis: Ha: pl≠p2

Q: A researcher wanted to estimate the difference between the percentages of users of two tooth- pastes…

A:

Q: What would be the Herfindahl-Hirschman Index (HHI) in the following situations?  A. 10 firms, each…

A: to find Herfindahl-Hirschman Index (HHI)

Q: Suppose in a single month a certain baseball team won 3 games and lost 21 what percentage of the…

A:

Q: 2. Suppose that, on average, in a Whole Foods Market in Dallas, 3.4 customers want to check out…

A:

Q: Use the figure to the right, which shows the percentages of adults from several countries who favor…

A:

Q: 5. The railroad has the fewerfatalities for 2010. Does that mean railroads have fewer accidents than…

A: Given Industry Number of Fatalities  Highway Accidents  968 Railway Accidents  44 Water…

Q: Suppose 50 percent of the customers at Pizza Palooza order a square pizza, 70 percent order a soft…

A:

Q: Two factory plants are making TV panels. Yesterday, Plant A produced 15,000 panels. Three percent of…

A: The given data is: Plant A produced 15,000 panels and 3% are defective  Let Plant B produce x panels…

Q: How do I solve c, d, and e with the given data?

A: From the given box plot we find the solution for C,d,e.

Q: Suppose that in a research it was discovered that those who majored in math, engineering, or…

A: The independent variable is the variable changed or monitored by the experimenter and is assumed to…

Q: Consider two groups of students: B1, students who received high scores on tests, and B2, students…

A: Consider three events A, B and C. Here events B and C are mutually exclusive and complementary…

Q: Suppose 60 percent of the customers at Pizza Palooza order a square pizza, 80 percent order a soft…

A: Given Data: Let X represent the event of ordering a square pizza Let S represent the event of…

Q: A firm produces bolts whose length x is normally distributed with a Me = 78.3 mm and a SD = 1.4mm.…

A: Given information- Population mean, µ = 78.3 mm SD = 1.4 mm Let X be the length of the bolt produces…

Q: A recent polls show that 61% of adult Americans are comfortable with the legalization of marijuana,…

A:

Q: Use the figure to the right, which shows the percentages of adults from several countries who favor…

A:

Q: If the average of z and 5z is 30, what is the value of a?

A: Given that avarage value of z and 5z is 30.

Q: a skeptical paranormal researcher claims that the proportion of Americans that have seen a UFO, p,…

A: It is given that the skeptical paranormal researcher claims that the proportion of Americans that…

Q: Con side that the ten Percent of indlividuals getting tested for the Virus, have the Virus. Now…

A: Let A be the event denoteds the person having virus and B be the event denote the event the person…

Q: At the beginning of 2018, a survey showed that a country with a total land area of 500,500 square…

A: Given that,  at the beginning of 2018, a survey showed that a country with a total land area of…

Q: A sociologist wants to determine if the life expectancy of people in Africa is less than the life…

A:

Q: A SRS of 60 students was interviewed to determine the proportion of students who preferred the new…

A: n = 60 Number of success = 37

Q: USA Today reported that approximately 25% of all state prison inmates released on parole become…

A:

Q: Two factory plants are making tv panels. Yesterday, plant A produced 8000 panels. Seven percent of…

A: It is given that plant A produced 8000 panels yesterday.The total production of panels will be 8000…

Q: mean: 67.755 standard deviation: 26.871

A: The normal distribution:A continuous random variable X is said to follow normal distribution if the…

Q: What is the value of SS for this sample?

A: Given: n = 4  Σ X = 4 Σ X 2 = 32 The formula to calculate the SS is as follows:

Q: Three hundred twenty mothers were interviewed where 112 said they only breastfeed (Set B) their…

A:

Q: A survey found that in a sample of 100 families, 37 owned cats. A survey done 5 years ago found that…

A:

Q: A set of n = 10 pairs of scores has ΣX = 20, ΣY = 30, and ΣXY = 74. What is the value of SP for…

A: It is given that ΣX = 20, ΣY = 30, and ΣXY = 74.

Q: Use the figure to the right, which shows the percentages of adults from several countries who favor…

A:

Q: If 7 prunes provide 10% of vitamin A needed daily, what percent of the daily percent of vitiman A is…

A: In mathematics, a percentage is a number or ratio expressed as a fraction of 100. It is often…

Q: Figures obtained from a city's police department seem to indicate that of all motor vehicles…

A:

Q: A bicycle manufacturer observes that the number of bike paths in a city affects the number of…

A: here take  x= no. of bike paths y= no. of bicycle sold here compute the regression line and then for…

Q: One thousand articles from a factory are examined and found to be three percent defective. Fifteen…

A: 9. Let p1 denotes the proportion of defective for first factory, and p2 denotes the proportion of…