Answer:
<em>c</em><em> </em>
Step-by-step explanation:
because the coordinate of x is negative
English translation:
If the quality control manager wants to estimate the average life of lamps with 20 hours, with a confidence level of 95% and an error of 10% is assumed. What is the sample size?
Answer:
4.2
Step-by-step explanation:
Step-by-step explanation:
B, 50. because the triangle next to it is the exact same thing.
To find the reciprocal of a fraction, you switch the numerator and denominator, for example the reciprocal of 2/5 is 5/2. With our mixed number, we convert to an improper fraction, 17/3Then we find the reciprocal, which is 3/17. I hope this helps!