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An Adweek Media/Harris Poll revealed that 44% of U.S. adults in the 18?34 year age category think that ?Made in America? ads boost sales. A different Harris Interactive poll showed that 78% of U.S. adults in the 18?34 year age category use social media online. Suppose that 85% of U.S. adults in the 18?34 year age category think that ?Made in America? ads boost sales or use social media online.
If a U.S. adult in the 18:34 year age category is randomly selected,a. What is the probability that the person both thinks that ?Made in America? ads boost sales and uses social media online?b. What is the probability that the person thinks that ?Made in America? ads boost sales but do not use social media online?
assume that the paired data came from a population that is normally distributed. using a 0.05 significance level find
suppose that the probability of a baseball player getting a hit in at bat is 0.2807. if the player has 38 at-bats
let xij gallons of component i used in gasoline j. assume that we have two components and two types of gasoline.
the visibility standard index vsi varies from 0 excellent to 200 very bad. denvers mean vsi is 90 with a standard
The mean weight for a certain type of fish is known to be 28.0 ounces with a standard deviation of 2.5 ounces . A game warden catches and weighs 30 fish from a certqin pond to check if they are larger than the mean stated above.
A IRS auditor randomly selects 3 tax returns from 57 returns of which 6 contains errors. What is the probability that she selects none of those containing errors?
A sample of size 36 results in a sample mean of 7.1. The value of the test statistic is ____
Why are the data that Jack has gathered qualitative in nature and describe the steps in qualitative data analysis (data reduction, data display, and the drawing of conclusions) on the basis of Jack's study
Consider the continuous random variable X, which has a uniform distribution over the interval from 20 to 28. The probability that X will take on a value between 21 and 25 is.
a sample of size 100 has a sample standard deviation of 25. what is the standard error of the sample mean? give your
Lets say a business has account receivables per customer of $60.54. There was a random sampling of 19 accounts that revealed a sample mean of $73.55 and a sample standard deviation of $19.29.
What proportion of healthy adults have pulse rates that are at most beats/sec? Round your answer to at least four decimal places.
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