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A music teacher had noticed that some students went to pieces during exams. He wanted to test whether this performance anxiety was different for people playing different instruments. He took groups of guitarists, drummers and pianists (variable= Instru) and measured their anxiety (variable = Anxiety) during the exam. He also noted the grade of exam they were taking (in the UK, musical instrument exams are known as ‘grades' and range from 1 to 8). He wanted to see whether the type of instrument played affected performance anxiety when controlling for the grade of the exam. What analysis should he use?
Independent analysis of variance.
Analysis of covariance.
Repeated measures analysis of variance.
Mixed analysis of variance.
A population consists of 15 items, 10 of which are acceptable. In a sample of 4 items, what is the probability that exactly 3 are acceptable? Assume the samples are drawn without replacement.
Informed Consent would be used in qualitative and quantitative research for data collection, and how each may impact it from a qualitative and quantitative standpoint
The level of significance is quantitatively defined as ? and the statistical power of a test is quantitatively defined as 1-?
john has six bills of paper money in the following denominations 1 5 10 20 50 and 100 if he selects 3 bills at a time
Standard deviation of 100. The top 3% of students receive $500. What is the minimum score you would need to receive this award?
Telephone interviews were conducted on a representative sample of 1,003 adults living in the United States. For this sample, 506 adults admitted that they have paid to download music
a normally distributed random variable y has std dev. 800. a random sample of 100 observations was taken from y and
for 30 randomly selected rolling stones concerts the mean gross earnings is 2.9 million dollars. assuming a population
12.4 of burglaries are cleared with arrests. a new policeman is assigned to five different burglaries.a. what is the
The rate of return for one year (reported in percent) for a sample of 12 mutual funds 4.634 4.15 4.76 4.70 4.65 4.52 4.70 5.06 4.42 4.51 4.24 4.52. Using .05 significance level,
a rational decision maker must choose between two alternatives. alternative 1 has a higher emv than alternative 2 but
for each research situation described below decide what statistical procedure would most likely be used to answer the
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