At a local club, the ages of the members and the times they took to run a 10 km race are recorded. For a random sample of 25 club members aged between 27 and 60, their ages (x years) and times (y minutes) produce the following regression line. y = 0.83x + 41.28 Four new members join the club. Their respective ages (in years) are 26, 18, 22, and 28. When the respective race times for the 4 new members are estimated, which one of these estimated race times is the most reliable?
At a local club, the ages of the members and the times they took to run a 10 km race are recorded. For a random sample of 25 club members aged between 27 and 60, their ages (x years) and times (y minutes) produce the following regression line. y = 0.83x + 41.28 Four new members join the club. Their respective ages (in years) are 26, 18, 22, and 28. When the respective race times for the 4 new members are estimated, which one of these estimated race times is the most reliable?
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.4: Distributions Of Data
Problem 22PFA
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Transcribed Image Text:At a local club, the ages of the members and the times they took to run a 10 km race are
recorded. For a random sample of 25 club members aged between 27 and 60, their ages
(x years) and times (y minutes) produce the following regression line.
y = 0.83x + 41.28
Four new members join the club. Their respective ages (in years) are 26, 18, 22, and 28. When the
respective race times for the 4 new members are estimated, which one of these estimated race times
is the most reliable?
A. 62.86 minutes
B. 56.22 minutes
C. 59.54 minutes
D. 64.52 minutes
Transcribed Image Text:The data of the number of 'centuries' i.e. a scores of 100 runs or more, scored by players at a
cricket club during a season are given in the following table.
Number of centuries
Number of players
4
1
k
3
4
3
8
1
Given that the mean number of centuries scored per player is 1.95, find the value of k.
А. 7
В. З
C. 4
D. 1
3.
2.
2.
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