Can you help me with this please. Please show your work. Thx in advance
2 answers:
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2/3+2/4
Get a common denominator
2/3 = 8/12
2/4 = 6/12
(6+8) /12 = 14/12
14/12 = 1 2/12 = 1 1/6
Answer:
Get a common denominator
2/3 = 8/12
2/4 = 6/12
(6+8) /12 = 14/12
14/12 = 1 2/12 = 1 1/6
Answer:
Answer:
95% confidence interval for the population mean is 20.255 and 17.945
Step-by-step explanation:
given data
mean = 19.1
standard deviation = 1.5
n = 9
to find out
95% confidence interval for the population mean
solution
we know 95% confidence interval formula i.e.
mean +/- t * standard deviation/ .............1
here t for 9 students 2.31 ( from t table)
so put all value n t standard deviation and mean in equation 1
= mean +/- t * standard deviation/
= 19.1 +/- 2.31 * 1.5/
= 19.1 +/- 2.31 * 1.5/
= 20.255 and 17.945
95% confidence interval for the population mean is 20.255 and 17.945