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 14:30
Simonne used the following steps to simplify the given expression. 12 - 3(-2x + 4) step 1: 12 + (β3)Β·(β2x) + (β3)Β·(4) step 2: 12 + 6x + (β12) step 3: 12 + (β12) + 6x step 4: 0 + 6x step 5: 6x what property of real numbers was used to transition from step 3 to step 4? a. identity property of addition b. inverse property of addition c. associative property of addition d. commutative property of addition
Answers: 1
Mathematics, 21.06.2019 18:30
The measure of one angle of an octagon is two times smaller that of the other seven angles. what is the measure of each angle?
Answers: 3
Mathematics, 21.06.2019 22:10
Monitors manufactured by tsi electronics have life spans that have a normal distribution with a standard deviation of 1800 hours and a mean life span of 20,000 hours. if a monitor is selected at random, find the probability that the life span of the monitor will be more than 17,659 hours. round your answer to four decimal places.
Answers: 2
Mathematics, 21.06.2019 23:00
Which of the following scenarios demonstrates an exponential decay
Answers: 1
A school authority claims that the average height of students is 178 cm. A researcher has taken a we...
History, 22.08.2019 16:30
Business, 22.08.2019 16:30
Mathematics, 22.08.2019 16:30
Mathematics, 22.08.2019 16:30
English, 22.08.2019 16:30
Mathematics, 22.08.2019 16:30
Social Studies, 22.08.2019 16:30
Social Studies, 22.08.2019 16:30
Biology, 22.08.2019 16:30
Advanced Placement (AP), 22.08.2019 16:30