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It is known that people in the USA spend on average 18 hours…

It is known that people in the USA spend on average 18 hours a day using electronic devices with a standard deviation of 5.8 hours. This data follows a normal distribution. What is the probability someone spends more than 20 hours using electronic devices a day? (round your answer to 4 decimals)

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Select the term that best fits this definition: As n increas…

Select the term that best fits this definition: As n increases the shape of the distribution will look more and more like a normal distribution

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If a researcher is given a list of all 51,000 students that…

If a researcher is given a list of all 51,000 students that go to the university and each student has a 10% chance of being selected to participate in the study, what type of sampling has occurred?

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Ethnicity of USF students is

Ethnicity of USF students is

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It is known that the population standard deviation of weight…

It is known that the population standard deviation of weight among females is 30. Assuming that we have a random sample of 210 and a sample mean of 127, what would be your 90% confidence interval estimate of the population mean weight?

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3 students apply to a PhD program.  The program rejects 25%…

3 students apply to a PhD program.  The program rejects 25% of all applicants.  Students are accepted and rejected independently of each other.  Let the random variable X represent the number of the 3 students who get rejected into the PhD Program.   What is the probability that 1 student is rejected to the program if it is known that at fewer than 2 students will be rejected? (round your answer to 4 decimal places) (Hint: Binomial distribution with P=25% and n=3, and conditional probability)

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Select the term that best fits this definition: This equals…

Select the term that best fits this definition: This equals the expected value of a sample proportion for a sampling distribution

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What is the clinical name of a probability that is used to d…

What is the clinical name of a probability that is used to determine the likelihood of someone having a positive test when it is known they do have the disease.

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Type of college a student is enrolled in at USF (i.e., Publi…

Type of college a student is enrolled in at USF (i.e., Public Health, Nursing, etc.) is

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3 students apply to a PhD program.  The program accepts 65%…

3 students apply to a PhD program.  The program accepts 65% of all applicants.  Students are accepted and rejected independently of each other.  Let the random variable X represent the number out of the 3 students who get accepted from the PhD Program. (Hint: Binomial distribution with n=3 and p=65%)   What is the mean of the random variable?  (round your answer to 4 decimal places)

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