A survey was taken asking people which soft drink they preferred...Brite or Fuzz. 326 people reported preferring Fuzz. The people who liked Fuzz represented 23 less than 1/5 of the total people surveyed. How many people were surveyed?
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A survey was taken asking people which soft drink they preferred...Brite or Fuzz. 326 people reported preferring Fuzz. The people who liked Fuzz represented 23 less than 1/5 of the total people surveyed. How many people were surveyed?
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- Consider a survey involving the cookie preferences of a sample of 1,214 adults. If 9% answered "sugar/shortbread," find the decimal and reduced fraction of that percentage.The randomly selected 60 shoppers have rated a new bottle design for a popular soft drink. The data are given below. Determine the no. of classes, class width, and the relative frequency of each class to construct the histogram for the given data. Explain the skewness of data based on the histogram.People end up tossing 12% of what they buy at the grocery store. Assume this is the true population proportion and that you plan to take a sample survey of 540 grocery shoppers to further investigate their behavior. Show the sampling distribution of , the proportion of groceries thrown out by your sample respondents.
- 2. Consider a survey involving the cookie preferences of a sample of 1,214 adults. If 24% answered "peanut butter," find the decimal and reduced fraction of that percentage.The president of Doerman Distributors, Inc., believes that 30% of the firm’s orders come from first-time customers. A random sample of 100 orders will be used to estimate the proportion of first-time customers. Assume that the president is correct and p = 0.30. What is the sampling distribution of for this study?According to the National Automobile Dealers Association, the mean price for used cars is 10,192. A manager of a Kansas City used car dealership reviewed a sample of 50 recent used car sales at the dealership in an attempt to determine whether the population mean price for used cars at this particular dealership differed from the national mean. The prices for the sample of 50 cars are shown in the tile named UsedCars. a. Formulate the hypotheses that can be used to determine whether a difference exists in the mean price for used cars at the dealership. b. What is the p value? c. At = 0.05, what is your conclusion?
- In a sample of 10,000 US employees, 1,530 said that working from home was worse than working in the office. (Data from Becher Freidman Institute for Economics, reported by Stephanie Stamm, “Is a Home Office More Productive? Some Workers Think So,” The Wall Street Journal, January 2, 2021, pg. B=2). Use this information to calculate a 95% confidence interval for the proportion of all US adults who find that working at home was worse. What is the UPPER confidence limit? Answer with a percentage that is rounded to the nearest integer. Please provide only typed answer solution Don't use any AI. It's strictly prohibitedThe Economic Policy Institute periodically issues reports on wages of entry-level workers. The institute reported that entry-level wages for male college graduates were $21.68 per hour and for female college graduates were $18.80 per hour in 2011. Assume that the standard deviation for male graduates is $2.30, and for female graduates it is $2.05. What is the sampling distribution of for a random sample of 50 male college graduates? What is the sampling distribution of for a random sample of 50 female college graduates? In which of the preceding two cases, part (a) or part (b), is the standard error of smaller? Why?Consumer complaints are frequently reported to the Better Business Bureau. Industries with the most complaints to the Better Business Bureau are often banks, cable and satellite television companies, collection agencies, cellular phone providers, and new car dealerships. The results for a sample of 200 complaints are in the file BBB. a. Show the frequency and percent frequency of complaints by industry. b. Which industry had the highest number of complaints? c. Comment on the percentage frequency distribution for complaints.
- The Port Authority also wants to determine if the gender profile of its customers has changed since last year, when 59.4% of its orders placed were placed by males. The genders for a sample of 49,896 orders placed this year are collected and recorded in the file PortAuthority. a. Formulate hypotheses that can be used to test whether the proportion of orders placed by male customers this year differs from the proportion of orders placed by male customers placed last year. b. Use the data in the file PortAuthority to conduct your hypothesis test. What is the p value for your hypothesis test? At = 0.05, what is your conclusion?An airliner carries 200 passengers and has doors with a height of 78 in. Heights of men are normally distributed with a mean of 69.0 in and a standard deviation of 2.8 in. Complete parts (a) through (d). a. If a male passenger is randomly selected, find the probability that he can fit through the doorway without bending. The probability is____ (Round to four decimal places as needed.) b. If half of the 200 passengers are men, find the probability that the mean height of the 100 men is less than 78 in. The probability is____ (Round to four decimal places as needed.) c. When considering the comfort and safety of passengers, which result is more relevant: the probability from part (a) or the probability from part (b)? Why? A. The probability from part (b) is more relevant because it shows the proportion of flights where the mean height of the male passengers will be less than the door height. B. The probability from part (a) is more relevant…Freshcrim specializes in the sales of ice cream from street trolleys in the centers of many cities. Some factors that may determine the sales of ice cream are: the atmospheric temperature, the location of the trolley, the rain and the humidity. However, there exists a hypothesis that the sales of ice cream during the summer are significantly correlated only with atmospheric temperature. They defined two variables: : the mean atmospheric temperature and : the sales. They considered the month of July of this year in a random sample of 33 cities. For each city in the sample, let be the mean temperature in degrees Fahrenheit and the mean sales per day in dollars per 100,000 residents. The data are given below. A regression model was run, with as the dependent variable and as the independent variable. City City City 1 80.0 35.07 12 93.0 46.64 23 75.1 29.48 2 78.4 30.66 13 85.2 50.04 24 87.8 35.20 3…