Answer:
a) 95% confidence interval estimate of the true weight is (3.026, 3.274)
b) 99% confidence interval estimate of the true weight is (2.944, 3.356)
Step-by-step explanation:
Confidence Interval can be calculated using M±ME where
- M is the mean of five successive weightings (3.150)
- ME is the margin of error from the mean
And margin of error (ME) can be calculated using the formula
ME=
where
- t is the corresponding statistic in the given confidence level and degrees of freedom(t-score)
- s is the standard deviation of the random error (0.1)
Using the numbers 95% confidence interval estimate of the true weight is:
3.150±
≈3.150±0.124
And 99% confidence interval estimate of the true weight is:
3.150±
≈3.150±0.206
Answer:
150
Step-by-step explanation:
100 : 160 :: e : 240 proportion
160e = (100)(240)
160e = 24000
elves = 150
Answer:
y = 4x + 5
Step-by-step explanation:
Answer:
80%
Step-by-step explanation:
12÷15= .8
.8=80%
..............
Answer: 
Step-by-step explanation:
The given inequality : 
To solve the above inequality, first we need to multiply 2 inside the bracket by using distributive property in left side, we get

Now, Subtracting 4x and 5 on the both sides of the inequality, we get
