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The chess club at a school has 15 members. The number of games won in tournament play this season by each member is listed.
6.6, 6, 7, 10, 11, 12, 13, 14, 14, 15, 16, 18, 18, 30
What measure is most appropriate for describing variability in this data distribution?
B 1
0 / 10000 W
2
3
4
5
6
7
8
9

it’s supposed to be -4+45=41

step-by-step explanation:

you didn't give me the choices, so i will just give you the graph so you can look at your choices and choose the right one.

d. 24+-0.114

step-by-step explanation:

the question requires us to calculate the approximate 95% confidence interval for the mean number of ounces of ketchup per bottle in the sample given the following statistics;

sample mean = 24

standard deviation, σ = 0.4

sample size , n = 49

the confidence interval for a population mean is calculated using the formula;

sample mean ± z-score*(σ/sqrt(n))

the z-score associated with a 95% confidence interval, from the standard normal tables, is;

1.96

substituting these values into the formula;

24 ± 1.96*(0.4/7)

= 24 ± 0.112

from the alternatives given, choice d is closest to the above expression;

answer: 0.1,0.85

step-by-step explanation: