169x2y6 - 196w4z8
(13xy2 + 14W324)
(13xy2 - 14 w324)
(13xy² + 146224)
(13x43 - 14W224)
(13x²y + 14w324)
(13x²y - 14W324)
(13xyő + 14W224)
(13xyő - 14W224)
Eroser

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;

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step by step explanation: when u removing the parentheses and combined them that would be : x+3y-x-y=2y

i honestly dont know