These box plots show daily low temperatures for a sample of days in two different towns. which statement is the most appropriate comparison of the spreads? a. the standard deviation for town a, 15°, is less than the standard deviation for town b, 20°. b. the interquartile ranges (iqrs) for towns a and b are both 30°. c. the interquartile range (iqr) for town a, 45°, is less than the iqr for town b, 50°. d. the interquartile range (iqr) for town a, 15°, is less than the iqr for town b, 20°.

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;

step-by-step explanation:

yes it represnts a functio, their are not 2 of the same numbers on the both sides

5 i think  

hope this !