Answer:
a) The level of significance is large because here z is not appropriate.
b) The true critical value is larger than z because the level of significance is large.
Step-by-step explanation:
a) Based on the question under consideration, the true level of significance is larger than .05 level of significance is large, the reason being that z is not appropriate in this case.
b) The true critical value is larger than that of the critical z, this is because the level of significance is large.
t* in P(T > t*) = 0.975 is more than z* = 1.96 in P(z> z*) =0.975
Answer:
6+8t
Step-by-step explanation:
Answer:
The slope is 3/5.
Step-by-step explanation:
Slope formula:
Therefore, the slope is 3/5, and the correct answer is 3/5.
Answer:
the probability that 11 adults are satisfied is 0.115 (11.5%)
Step-by-step explanation:
since the result of each adult is independent of others , then since the adults are selected at random , the random variable X= number of adults who are satisfied , has a binomial probability distribution , where
P(X=x) = n!/[(n-x)!*x!] * p^x * (1-p)^(n-x)
where
n= sample size = 20
p= probability of any adult to be satisfied with the job of airlines = 0.65
x = number of adults who are satisfied
P(X=x) = probability that x adults are satisfied
then for x= 11 , we have
P(X=11) = 20!/[(20-11)!*11!] * 0.65^11 * (1-0.65)^(20-11) = 0.115 (11.5%)
then the probability that 11 adults are satisfied is 0.115 (11.5%)
Answer:
x = 2
Step-by-step explanation:
Solve for x:
5 x - 5 = 3 x - 9
Subtract 3 x from both sides:
(5 x - 3 x) - 5 = (3 x - 3 x) - 9
5 x - 3 x = 2 x:
2 x - 5 = (3 x - 3 x) - 9
3 x - 3 x = 0:
2 x - 5 = -9
Add 5 to both sides:
2 x + (5 - 5) = 5 - 9
5 - 5 = 0:
2 x = 5 - 9
5 - 9 = -4:
2 x = -4
Divide both sides of 2 x = -4 by 2:
(2 x)/2 = (-4)/2
2/2 = 1:
x = (-4)/2
The gcd of -4 and 2 is 2, so (-4)/2 = (2 (-2))/(2×1) = 2/2×-2 = -2:
Answer: x = -2
