Answer:
A
Step-by-step explanation:
edge
Answer: = ( 63.9, 66.7)
Therefore at 90% confidence interval (a,b)= ( 63.9, 66.7)
Step-by-step explanation:
Confidence interval can be defined as a range of values so defined that there is a specified probability that the value of a parameter lies within it.
The confidence interval of a statistical data can be written as.
x+/-zr/√n
Given that;
Mean x = 65.3
Standard deviation r = 5.2
Number of samples n = 36
Confidence interval = 90%
z(at 90% confidence) = 1.645
Substituting the values we have;
65.3 +/-1.645(5.2/√36)
65.3 +/-1.645(0.86667)
65.3+/- 1.4257
65.3+/- 1.4
= ( 63.9, 66.7)
Therefore at 90% confidence interval (a,b)= ( 63.9, 66.7)
Answer:
y-intercept equals 4 and the x-intercept is the fraction 10/3
195 students voted for eagle in the election
What is ratio?
Ratio means expressing the a figure as a fraction of total figure, in the case of falcon, the number of students that voted for falcon is seen as 5 whereas the total number of students that voted is 8 whereas for eagle, the total number of students that voted for eagle is 1 compared to 3 which represents the total number of votes cast.
In a bid to determine the number of students that voted eagle in the election, we would simply multiply total votes of 536 by 1/3
votes for eagle=1/3*586
votes for eagle=195 votes
We have rounded to the nearest whole number since number of votes cannot be fractional
Find out more on fractions:brainly.com/question/11562149
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