Answer:
0.1163
Step-by-step explanation:
given that if a television service subscriber has cable service, there is a 0.24 probability the subscriber has a DVR player. If the subscriber does not have cable service (e.g., has satellite service), there is a 0.7 probability the subscriber has a DVR player
Let A1 be the event subscriber has cable service and A2 subscriber does not have cable service
A1 and A2 are mutually exclusive and exhaustive
P(A1) = 0.75, P(A2) = 0.25
B = Subscriber has a DVD player
P(B/A1) =0.24 and P(B/A2) = 0.7
Prob for the subscriber does not have a DVR player
= P(B') = P(A1B')+P(A2B') 
required probability = P(A2/B') = P(A2B')/P(B)
=
Answer:
10%
Step-by-step explanation:
the difference between 260 and 286 is 26, which is 10% of 260 so 10%
The simplified answer is 4/5
Answer:
We accept the null hypothesis and reject the alternate hypothesis. There is no evidence to conclude that the population mean is greater than 29. The population mean is less than or equal to 29.
Step-by-step explanation:
We are given the following in the question:
Population mean, μ = 29
Sample mean, 
= 30
Sample size, n = 47
Alpha, α = 0.05
Population standard deviation, σ = 5
First, we design the null and the alternate hypothesis
a) This is a one-tailed test because the alternate hypothesis is in greater than direction.
We use One-tailed z test to perform this hypothesis.
b) 
, we reject the null hypothesis and accept the alternate hypothesis and if 
, we accept the null hypothesis and reject the alternate hypothesis.
c) Formula:
Putting all the values, we have
d) Now, 
Since,
We accept the null hypothesis and reject the alternate hypothesis. There is no evidence to conclude that the population mean is greater than 29. The population mean is less than or equal to 29.
e) P-value is 0.0853
On the basis of p value we again accept the null hypothesis.
