Mathematics, 22.08.2020 17:01, jonnaevans4856
A school authority claims that the average height of students is 178 cm. A researcher has taken a well-designed survey and his sample mean is 177.5 cm and the sample standard deviation is 2. The sample size is 25. Which statement is correct?
a) The result of the survey is statistically significant.
b) The sample mean and population mean is the same.
c) The result of the survey is biased.
d) The difference exists due to chance since the test statistic is small
Answers: 3
Mathematics, 21.06.2019 19:40, friendsalwaysbae
Given the sequence 7, 14, 28, 56, which expression shown would give the tenth term? a. 7^10 b. 7ยท2^10 c. 7ยท2^9
Answers: 1
Mathematics, 21.06.2019 23:40, christinasmith9633
30 ! the graph shows the number of siblings different students have. select from the drop-down menus to correctly complete the statement.
Answers: 1
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