The following data were collected from a survey of participa…
The following data were collected from a survey of participant’s political party and their social media usage. Democrat Republican Green Facebook 324 198 130 Instagram 458 325 245 TikTok 377 276 167 For each question below, show your work in the answer box or on paper. No credit will be given if only the answer is provided. Round each answer to 3 decimal places if necessary. a) Find the probability that a randomly selected individual is a republican. b) Find the probability that a randomly selected individual is a democrat or uses Facebook. c) Find the probability that a randomly selected individual uses Instagram given that he/she is a democrat. d) If two different individuals are randomly selected, find the probability that they are in the Green Party.
Read DetailsThe mean of the commute time to work for a resident of a cer…
The mean of the commute time to work for a resident of a certain city is 27.8 minutes. Assume that the standard deviation of the commute time is 8.1 minutes and use Chebyshev’s inequality to answer the following question. What is the minimum percentage of commuters who have commute times between 3.5 minutes and 52.1 minutes?
Read DetailsSuppose babies born after a gestation period of 32 to 35 wee…
Suppose babies born after a gestation period of 32 to 35 weeks have a mean weight of 3000 grams and a standard deviation of 1000 grams while babies born after a gestation period of 40 weeks have a mean weight of 3300 grams and a standard deviation of 650 grams. If a 33-week gestation period baby weighs 2540 grams and a 41-week gestation period baby weighs 3130 grams, find the corresponding z-scores. Which baby weighs less relative to the gestation period? Explain. (Hint: compare z-scores) Show work (z-scores) and type your explanation in the answer box below or on paper. Round each z-score to 2 decimal places. No credit will be given if only the answer is indicated.
Read DetailsImagine that the U.S. federal government had the means to su…
Imagine that the U.S. federal government had the means to survey all high school seniors in the U.S. concerning their plans for future education and employment, and found that 50 percent were planning to attend a 4-year college or university in the following year. This 50 percent is an example of a __________.
Read DetailsThe speeds (in mph) of 9 randomly selected cars passing a ce…
The speeds (in mph) of 9 randomly selected cars passing a certain checkpoint are measured by radar. The results are shown below. Answer the following questions based on this sample data set. 40 45 45 45 48 52 52 61 63 a) Find the mean. [mean] b) Find the median. [median] c) Find the range. [range] d) Find the standard deviation. [SD] e) Determine the IQR (interquartile range). [IRQ] f) Find the upper and lower fences. lower fence = [lower] upper fence = [upper] g) Determine if there are any outliers in the data set. (List any outliers). [outlier]
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