Answer:
where is the thing to answer
Answer:
The 98% confidence interval of the proportion = (0.312, 0.374)
Step-by-step explanation:
(Give answers accurate to 3 decimal places.)
The formula for Confidence Interval of Proportion is given as:
p ± z × √p(1 - p)/n
Where p = Proportion = x/n
x = 440
n = 1282
p = 440/1282 = 0.34321372854
Approximately = 0.343
z = z-score of 98 % confidence interval
= 2.326
Confidence Interval =
= 0.343 ± 2.326 × √0.343(1 - 0.343)/1282
= 0.343 ± 2.326 × √0.225351/1282
= 0.343 ± 2.326 × √0.00017578081
= 0.343 ± 2.326 × 0.01325823555
= 0.343 ± 0.03083865589
0.343 - 0.03083865589
= 0.31216134411
Approximately = 0.312
0.343 + 0.03083865589
= 0.37383865589
Approximately to = 0.374
Therefore, the 98% confidence interval of the proportion = (0.312, 0.374)
Answer:
no solution
Step-by-step explanation:
ya gotta use your eyes and brain huney. it aint that hard. kk? but ill still explain for you.
since x+y=6 and x+y=4. then 4=6. but that is false so no solution.
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Based on the number of miles that Reshanda rode on her bicycle from her house, her average rate over the last 7 hours of the trip was 7 miles per hour
<h3>How to find the average rate?</h3>
The average rate shows the speed that a person was going over a period of time such that they were able to cover a certain distance, in that period of time.
First, find the number of miles that Reshanda rode in the last 7 hours of her trip on the bicycle:
= Number of miles after 11 hours - Number of miles after 4 hours
= 79 miles - 30 miles
= 49 miles
Reshanda was able to ride for 49 miles in the last 7 hours so her average rate was:
= Distance / Time
= Number of miles ridden / Time ridden
= 49 / 7
= 7 miles per hour
Find out more on average rate at brainly.com/question/27886554
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