Answer:
The answer is below
Step-by-step explanation:
The mean (μ) = 3.7 m, standard deviation (σ) = 1.17 m, confidence (C) = 95% = 0.95, sample size (n) = 50
a) α = 1 - C = 1 - 0.95 = 0.05
α/2 = 0.05/2 = 0.025
The z score of α/2 is the same as the z score of 0.475 (0.5 - 0.025) which is 1.96. Hence:
The margin of error (E) = 
The confidence interval = μ ± E = 3.7 ± 0.32 = (3.38, 4.02)
b) This means that we are 95% sure that any distance between the taxi and the lead car is between 3.38 m and 4.02 m
Answer:
The sample space is SG,GG,SS,GS. I know this because the sample space is the set of all possible outcomes of an experiment.
Hope this helped!
Answer:
40 students were in each bus on the trip.
Step-by-step explanation:
Since 20 students rode in cars, subtract 20 from 340. This results in 320.
There are 8 school busses, so divide 320 student into 8 busses.
This results us in 40 students in each bus.
Answer:
Aria unui paralelogram 
Step-by-step explanation:
Folosind formula:
Aria unui paralelogram = (baza x înălțimea)
= (3√2 x 2)
Aria unui paralelogram
Step-by-step explanation:
-7(1+3x) = 4 + 5x
-7 - 21x = 4 + 5x
(get all the variables on one side. Don't forget to change the signs)
-7-4 = 5x + 21x
-11 = 26x
(divide both sides by the coefficient [26])
26x/26= -11/26
x = -11/26
