Answer:
The minimum sample needed to provide a margin of error of 3 or less is 52.
Step-by-step explanation:
The confidence interval for population mean (<em>μ</em>) is:
The margin of error is:
<u>Given:</u>
MOE = 3
<em>σ </em>= 11
The critical value for 95% confidence interval is: 
**Use the <em>z</em>-table for critical values.
Compute the sample size (<em>n</em>) as follows:
Thus, the minimum sample needed to provide a margin of error of 3 or less is 52.
Answer:
Step-by-step explanation:
Answer:
91.8 ft above sea level
Step-by-step explanation:
Note that 1 meter is approx. 3.28 feet.
Converting 28 meters to feet is accomplished by multiplying 28 m by the conversion factor 3.28 ft / 1 m:
28 m 3.28 ft
-------- * ----------- = 91.8 ft above sea level
1 1 m
<span>4b^2 - 16 = (2b + 4)(2b - 4)
</span>difference of squares<span>
a^</span>2<span> – b^</span>2<span> = (a + b)(a – b) </span><span>
</span>
Answer:
idk what you asking but if it solve for for x it going be no solution
