Answer:
Confidence Interval in 95% confidence level for the quality rating is (6.06,7.46)
Step-by-step explanation:
Confidence Interval can be calculated using the formula M±ME where
- M is the mean of the sample
- ME is the margin of error in a given confidence level
Using the sample obtained from 50 business travelers we get
- Mean of the sample is 6.76
- standard deviation of the sample is 2.526
Margin of error (ME) around the mean using the formula
ME=
where
- z is the corresponding statistic in 95% confidence level (1.96)
- s is the standard deviation of the sample (2.526)
- N is the sample size (50)
Using the numbers in the formula we get:
ME=
≈ 0.70
Then the confidence interval becomes 6.76±0.70
Answer:
460 USD
Step-by-step explanation:
monthly earnings = 250 x 4 = 1000
monthly bills = 135 x 4 = 540
end of month = 1000 - 540 = 460 USD
Answer:
Step-by-step explanation:
y = x - 10. the slope here is 1. A parallel line will have the same slope.
y = mx + b
slope(m) = 1
(-1,-3).....x = -1 and y = -3
now sub and find b, the y intercept
-3 = 1(-1) + b
-3 = -1 + b
-3 + 1 = b
-2 = b
so ur equation is : y = x - 2 <=== equation for line t
Answer:
area = 62ft
Step-by-step explanation:
Answer:
B. 27 inches
Step-by-step explanation:
given s³ = 729 where s is the length of each side of the fish tank (which also happens to equal the height because all sides of a cube are equal length)
s³ = 729
s = ∛729
s = 27 inches
