Mathematics, 13.11.2020 21:00 anggar20
An observational study found that the amount of time a child spends learning an instrument is associated with standardized testing performance. The correlation coefficient was found to be r = 0.92. A conclusion was made that the more time a child spends learning an instrument, the better the child performs on standardized tests. Why is such a conclusion not correct?
a
Causation cannot be determined from an observational study.
b
The sample was not representative of the population.
c
The correlation value should be negative for such a conclusion.
d
The correlation value should equal 0 for such a conclusion.
e
The correlation value implies that less than 85% of the variability in standardized testing performance can be explained by learning an instrument.
Answers: 3
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Last year amusement park received 236,758 visitors it was open every day of the year but 7 hollidayβs what was the average number of visitors to the park per day
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55 bridesmaids want to make 325 325 decorations for a wedding. each decoration takes about 212 2 1 2 minutes to make. which response gives the best estimate for the amount of time each bridesmaid will spend making decorations?
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Mathematics, 21.06.2019 15:40
What is the first quartile of this data set? 10, 11, 12, 15, 17, 19, 22, 24, 29, 33, 38 a. 12 b. 19 c. 29 d. 10
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An observational study found that the amount of time a child spends learning an instrument is associ...
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