Can you pls answer this
2 answers:
Answer:
D
Hey There!
To find the answer you have to add the frequencies of all of them and take the frequency of 3 people being in a car and divide that by the sum of all of the frequencies if that makes sense
37+98+40+25=200
The frequency of 3 people being in a car is 40
so we would do
which is equal to
Therefore D is your answer
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Answer: 0.17 ± 0.096
Step-by-step explanation:
Confidence interval for difference between the population proportion :
, where = sample proportion for population 1.
= sample proportion for population 2.
= Sample size from population 1.
= Sample size from population 1.
As per given , we have
Population
Critical z-value for 99% confidence level is z*=2.576 [By z-table]
Now , the 99% confidence interval estimate for the difference between the percentages of men and women who prefer Coca Cola over Pepsi :
\
Hence, the correct answer is 0.17 ± 0.096.