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Sagot :
The statement B is correct, i.e., The result of the survey is statistically significant.
What is statistical significance?
The probability that the difference in conversion rates between a given variation and the baseline is not the result of random chance is known as statistical significance.
Given:
- Average percentage of students = 68
- Sample mean of researcher = 64.5
- Sample standard deviation = 2
- Sample size = 300
To find: WHich of the given statements is correct?
Finding:
According to the given data,
- We can infer that there is a statistically significant result because our findings from a large sample size and relatively small standard deviation show that 64.5 is much lower than the average 68.
- Additionally, it differs practically.
Hence, the statement B is correct, i.e., The result of the survey is statistically significant.
To learn more about statistical significance, refer to the link: https://brainly.com/question/15848236
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(COMPLETE QUESTION:
A school authority claims that the average percentage marks of students is 68. A researcher has taken a well-designed survey and his sample mean is 64.5 and sample standard deviation is 2. The sample size is 300.Which statement is correct?
a.)
The difference exists due to chance since the test statistic is small.
b.)
The result of the survey is statistically significant.
c.)
The sample size should be much more.
d.)
The result of the survey is not statistically significant.)
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