Answer:
a. True
b. False
c. False
d. True
e. True
Step-by-step explanation:
a.
True,
A 99% confidence interval covers more than a 95% confidence interval.
This is because, more potential values must be allowed within the interval, to be more confident that the true population value falls within the interval
b.
False,
Decreasing the significance level will decrease the probability of making a type 1 error because the probability of a Type I error is the same as α.
c.
False,
The evidence is not sufficient to make a conclusion that µ = 5.
d. True
The probability of making a type II error (failing to reject the null hypothesis when it is actually false) is called β (beta).
The probability of not making this error is 1 - β
1 - β + β = 1
e.
True,
Large sample sizes can decrease the margin of error.
Because the relationship between margin of error and sample size is simple is that when the sample size increases, the margin of error decreases and vice versa
Answer:
last option
Step-by-step explanation:
Sin A: opp/hyp (opposite/hypotenuse)
opposite of A is 24 and the hypotenuse is 30
write that as a fraction: 24/30
simplify and it is: 4/5
Cos A: adj/hyp (adjacent/hypotenuse)
adjacent side of A is 18 and the hypotenuse if 30
write that as a fraction: 18/30
simplify and it is: 3/5
Answer:
x=2
Step-by-step explanation:
look at the line on the graph where y is 3 units up x is 2 units right
MEEE TOOOOOO!!!!!! I NEED HELP
Answer:
adults tickets=1384
kids:616 tickets
1384-616= 768 tickets
Step-by-step explanation:
let x be adult tickets and y kids
x+y=2000 ⇒x=2000-y
20x+12y=35072 solve by substitute for x=2000-y
20(2000-y)+12y=35072
40000-20y+12y=35072
-8y=35072-40000
-8y=-4928
y=-4928/-8
y=616
x=2000-616
x=1384 tickets
check:
20(1384)+12(616)=35072 ( correct)
