Hello! :D
Equation:
The simplified answer: -0.75
Hope this helps! Have a wonderful day! :D
Answer:
Confidence interval = [ 0.4432, 0.4968]
Step-by-step explanation:
Registered voters approved of the job Barack Obama was doing as president,
p = 47% = 0.47
Total sample size, n = 2,294
Confidence level = 99%
now,
confidence interval for the proportion of all registered voters who approved of the job Barack Obama was doing as president
= p ±
for 99% confidence level, z value is 2.58
= 0.47 ±
= 0.47 ± 0.0268
or
Confidence interval = [0.47 - 0.0268, 0.47 + 0.0268 ]
or
Confidence interval = [ 0.4432, 0.4968]
Answer:
16 hours
Step-by-step explanation:
In the time it took Ruth to plant 5 bulbs, Terry planted 3 bulbs. So, Terry did 3/8 of the work of planting 8 bulbs in that time.
We expect that Terry alone would take 8/3 of the time that it took when working together with Ruth.
(8/3)×(6 hours) = 16 hours . . . . . . for Terry to do the job alone
Answer: (a) 0.317
(b) 0.167
(c) Not unusual
Step-by-step explanation:
Probability is defined as the chance of an event occurring.
Let S be a sample space and A be an event in the sample space, the probability of event A occurring can be found using the following:
P(A) = n(A) divided by n(S) where n(A) = number of elements in event A and n(S) = number of elements in the sample space.
(a) P(Right field) = Number of hits to the right field divided by total number of hits
= 1919/6060
= 19/60 which is approximately equal to 0.317
(b) P(Left field) = 1010/6060
= 1/6 which is approximately equal to 0.167
(c) The probability that the home run was hit to the left field is 0.167.
The probability of an unusual event is 0, therefore, it is possibly for the
player to hit a home run to the left.