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According to a Pew Research Center poll, 22% of adult Americans have contributed to an online fundraising project. A random sample of 100 adults is selected.
Let the random variable X be the number of adult Americans who have contributed to an online fundraising project.
(a) Find the probability of getting exactly 12 adults who have contributed to an online fundraising project. Give your calculator input and round to three significant figures.
(b) Find the probability of getting at most 30 adults who have contributed to an online fundraising project. Give your calculator input and round to three significant figures.
How do you control the direction of the bidirectional bits in the HCS12 I/O ports?
How much money do they need to pay into the annuity each quarter for the annuity to have a total value of $13,000 after 10 years?
The length of time needed to complete certain test is normally distributed with mean 74 minutes and standard deviation 17 minutes. Find the probability that it
Cash back when they make a purchase at a shoe store. or C. an entry into a sweepstakes when they make a purchase. I need to determine the probability of each option.
find the t-critical value for given confidence level and the sample size.a. n10 90b. n25 98c. n28 99d. n15
A company claims that on average, when exposed to its toothpaste, 45% of all bacteria related to gingivitis is killed.
Which of the following tests should be used to calculate the p-value for this association?
To find out the effect of a drug on reaction time, an investigator administered 0, 25, 50, or 75 milligrams to four groups of volunteer rats. The quickness of their response to a tipping platform was measured in seconds.
Discuss the use of standard deviation. Explain how it might be useful to you in your research and how you would explain results using standard deviation.
Distributed with the following parameters: μ1 = 100, σ1 = 4, μ2 = 75, σ2 = 4, μ3 = 75, and σ3 = 2. What is the probability that an assembly chosen at random will have combined dimension in excess of 262?
Use the commutative and associative properties of multiplication and exponential notation to rewrite the product.
a sample of n 25 individuals is selected from a population with fx 80 and a treatment is administered to the sample.
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