Answer:
27.8
Step-by-step explanation:
You need to do brackets first
3.6-1.8 = 1.8
Then substitute
4.5 x 8- (0.4 + 9.6- 1.8)
0.4+9.6-1.8=8.2
4.5 x 8 - 8.2 =27.8
Answer:
look down
Step-by-step explanation:
the square root of 5 is : 2.2360679775
rounded to the nearest thousandth is 2.236
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the square root of 19 is: 4.35889894354
rounded to the nearest thousandth is 4.359
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the square root of 99 is: 9.94987437107
rounded to the nearest thousandth is 9.950
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the square root of 42 is: 6.48074069841
rounded to the nearest thousandth is 6.481
hope this helps :)
<span>A medical researcher wants to investigate the amount of time it takes for patients' headache pain to be relieved after taking a new prescription painkiller. She plans to use statistical methods to estimate the mean of the population of relief times. She believes that the population is normally distributed with a standard deviation of 18 minutes. How large a sample should she take to estimate the mean time to within 4 minutes with 97% confidence?
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n = [z*s/E]^2
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n = [2.17*18/4]^2 = 96 when rounded up
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