We know that i=√-1
so we do pemdas
=
exponents
=
then
=-2 times -2 times i times i=4 times -1=-4
now we have
=
=
=4i=aprox 4√-1
the answer is 4i
so we do pemdas
exponents
then
now we have
the answer is 4i
The Rally family has 3 types of pets: cats, dogs, and horses. Their total number of pets is 12. The ratio of cats to dogs to hor
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The confidence interval for the true mean diastolic blood pressure of all people is 100 ± 2.41 where the lower limit is 97.59 and the upper limit is 102.41
<h3>How to determine the confidence interval?</h3>We have:
Mean = 100
Sample size = 80
Standard deviation = 11
At 95% confidence interval, the critical z value is:
z = 1.96
The confidence interval is then calculated as:
So, we have:
Evaluate the product
Divide
Split
CI = (100 - 2.41,100 + 2.41)
Evaluate
CI = (97.59,102.41)
Hence, the confidence interval for the true mean diastolic blood pressure of all people is 100 ± 2.41
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