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16:21 Section 3-2 Mat Connect
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Section 3-2 Math Connect Percent & Proportion
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X 3.2.PS-8
A company that makes hair-care products had 2,000 people try a new shampoo. Of the 2,000 people,
14 had a mild allergic reaction. What percent of the people had a mild allergic reaction?
% of the people had a mild allergic reaction.
(Type an integer or a decimal.)

I am canfiusion

Step-by-step explanation:

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;

the first one is x^2+2x+2

the second one is x^2+4

the last one is x^2-4x+8