A car dealer offers 6 different models, 4 colors, and 3 kinds of transmissions. How many unique cars could you choose from at th
2 answers:
Answer: 72
Step-by-step explanation:
Given: The number of difference models of cars = 6
The number of different colors of cars = 4
The number of different kinds of transmissions= 3
Then, the number of unique cars will be given by :-
Therefore, the number of unique cars dealer can offer= 72.
Hence we can choose a unique car from 72 cars.
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Answer:
The 99% confidence interval for the percentage of people who own a tablet computer is between 71.59% and 88.41%
Step-by-step explanation:
Confidence interval for the proportion of people who own a tablet:
In a sample with a number n of people surveyed with a probability of a success of , and a confidence level of
, we have the following confidence interval of proportions.
In which
z is the zscore that has a pvalue of .
For this problem, we have that:
99% confidence level
So , z is the value of Z that has a pvalue of
, so
.
The lower limit of this interval is:
The upper limit of this interval is:
Percentage:
Multiply the proportion by 100.
0.7159*100 = 71.59%
0.8841*100 = 88.41%
The 99% confidence interval for the percentage of people who own a tablet computer is between 71.59% and 88.41%