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What is the probability that the person thinks that "Made in America" ads boost sales given that the person does not use social media online?
Suppose that in a sample of 200 students, 120 are taking an English course, 110 are take a Mathematics course, and 60 are taking both Math and English. Suppose a student is randomly selected from th
Find the equation for the line of best fit using x= miles and y=intersections. Using the equation found in part (b), estimate the average number of intersections per mile along I-90.
If Punxsutawney Phil sees his shadow on February 2, then the legend says that winter will last 6 more weeks. In 117 years, Phil has seen his shadow 103 times. What is the probability that Phil will
Find the minimum sample size required to estimate a population proportion or percentage. As a newly hired manager of a company that provides cell phone service.
According to the Internal Revenue Service, the mean tax refund for the year 2007 was $ 2,708. What percent of the refunds are more than $ 3,000?
Find the mean of the CEO salaries, in thousands of dollars, rounded to 2 decimal places. Do not use a dollar sign. Note: $177,760 should be recorded as 177.76.
Determine the sample size needed in order to be 95 percent confident that , the sample proportion of U.K. annual report graphics that are distorted, is within a margin of error of .03 of p, the popu
The same type of fabric after treatment has Normally distributed breaking strength with mean 30 pounds and standard deviation 1.6 pounds.4 A clothing manufacturer tests an SRS of 5 specimens of each
If Accrotime does not want to make refunds on more than 12% of the watches it makes, how long should the guarantee period be (to the nearest month)?
The 70-year long-term record for weather shows that for New York State. What is the probability that next year the total precipitation for New York State is more than 49.4 inches?
The amount of beer in a bottle is normally distributed with amean of 11.7 ounces, and a standard deviation of 0.40 ounces. An independent research firm takes a sample of 16 bottles and findsthe valu
Use the data below (the 2011 season (1) number of offensive fumbles +interceptions (giveaway) and (2) wining percentage of eight randomly selected NFL teams). Compute the covatiance between Giveaway
average college student weighs 154 and the distribution of weights has a standard deviation of 21.4 what percent of college men weigh 200 pounds or more.
Create a histogram showing the distribution of symptom scores in this sample. Is this a skewed distribution? If so, is it skewed to the left or to the right?
What is the probabiity that his sales for November will be less than 100k? Find the mean and standard deviation of the November sales.
Let et~IID N(0,1) and define Xt=etet-1. Show that {Xt} is a white noise sequence. This provides an example of a dependent white noise sequence. Two bonus points for rigorously proving Xt and Xt+1 ar
Suppose we have this data set of (Mother's IQ, Child's IQ). How would you determine the correlation and what would your report say about the relationship? Using Excel to determine the correlation.
Steve, a Bauer College of Business student, has a grade point average of 3.32 points with a standard deviation of 0.64 points. What is Steve's grade point average at graduation?
the demand equation is estimated to be 50 3P + 2Po , where Po is the price of some other good. Assune the average value of P is $ 3 and the average value of Po is $ 6. a. what is the price elastici
Also, 53 percent of the managers have MBA degrees. Using the probability formulas, find the proportion of employees who either have MBAs or are managers.
Construct a p chart for the proportion of defective calculators, and determine whether the process is within statistical control. The process is stable with p = 0.05.
Tay-Sachs couples. Approximateley 1 in 28 people of Ashkenazi Jewish descent are Tay-Sachs carriers. In randomly sampling one man and one woman from this population, what is the probability neither
The International Bottled Water Association says that Americans on the average drink 4.6 (8-oz.). What proportion of Americans drink more than the recommended 8 servings?
Four buses carrying 172 high school students arrive to Montreal. The buses carry, respectively,40,50, 34,and 48 students. One of the students is randomly selected. Let X denote the number of student