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A 9-year-old patient has recently been diagnosed with ADHD and is starting methylphenidate (Ritalin) as part of their treatment plan. The child’s parents express concern about potential side effects. Which of the following is the most appropriate nursing intervention?

If you were testing whether the difference between two population means were equal (thus your H0: μ1 = μ2), what value would you find in the center of your randomization distribution?

Identify the appropriate parameter to conduct inference on based on the description of the survey/experiment conducted. A professor claims that 70% of College of Business graduates earn more than $45,000 per year.  In a random sample of 300 graduates, 195 earn more than $45,000.  A researcher wishes to test the professor’s claim.

The data below displays heights (in inches) of a random sample of students and their parent of the same sex. Student (s) 70 65 68 63 72 71 Parent (p) 65 67 64 63 70 66 Difference (s-p) 5 -2 4 0 2 5 The mean for the difference between student and parent heights is   = 2.33 and the sample standard deviation for the difference between student and parent heights is sD = 2.88.   We can assume the distribution of the differences is Normal. The p-value for this hypothesis test is 0.0218.  At a 0.05 significance level, what conclusion can you make?

A researcher wanted to determine if the year the Star Spangled Banner was sung at a Super Bowl can be used as a linear predictor of the length of time (in seconds) the song was sung.  Data were collected and after checking all conditions, a linear regression analysis was produced.  Select Rguroo output is provided below.   What is the value of the t-test statistic hidden above?  Remember, the general form of the test statistic is (observed statistic – null parameter)/standard error.

Researchers are interested in the effect of distractions on work efficiency.  Forty college students were randomly selected to participate in an experiment in which half were randomly assigned to a quiet room and the other half to a room in which loud music was playing.  The students were asked to complete an easy Sudoku puzzle and their completion times were recorded.  A 95% confidence interval for the difference between mean completion times for the puzzle (music – no music) was found to be (5, 11) minutes.  Could this information be used to conclude that we should reject a null hypothesis of no difference in the average completion time between these two groups at a significance level of 0.05?

A random sample taken with replacement from the original sample and is the same size as the original sample is known as a:

Which of these statements does not contain a statistical mistake about correlation coefficient, r?

A gambler states that the probability of getting a “1” and a “2” when rolling two four-sided dice is 1/4 times 1/4 (or 1/16) because the dice are equally likely to land on any of the four sides and the results of the two dice rolls are independent.  Is this an example of a theoretical probability or an empirical probability?

A study of new cars to predict city gas mileage (miles per gallon) from their weight (pounds) resulted in a correlation coefficient of r = –0.4 and an r2 = 0.16. Based on this information, which of the following statements is correct?