Answer: c. 39.14 to 42.36
Step-by-step explanation:
We want to determine a 95% confidence interval for the average hourly wage (in $) of all information system managers
Number of sample, n = 75
Mean, u = $40.75
Standard deviation, s = $7.00
For a confidence level of 95%, the corresponding z value is 1.96. This is determined from the normal distribution table.
We will apply the formula
Confidence interval
= mean +/- z ×standard deviation/√n
It becomes
40.75 +/- 1.96 × 7/√75
= 40.75 ± 1.96 × 0.82
= 40.75 + 1.6072
The lower end of the confidence interval is 40.75 - 1.6072 =39.14
The upper end of the confidence interval is 40.75 + 1.6072 =42.36
Answer is 4,320 dollars because once you do 5*86400 you move the decimal to the left two times since each ml is 0.05. Giving you $4,320
Answer:
23, 24 and 25
Step-by-step explanation:
These are consecutive numbers that add up to 72.
Answer:
160
Step-by-step explanation:
the length betwenn side to side woukd be 160
Answer:
B
Step-by-step explanation:
just trust me...it's right ;)