The following set of ordered pairs gives the results of a science exper iment. Twelve people were given different daily doses of vitamin C, in milligrams, for a year. This is the x-value. They reported the num ber of colds they got during the year. This is the y-value. (100, 4), (100, 4), (100, 3), (250, 3), (250, 2), (250, 2),
(500, 1), (500, 2), (500, 1), (1,000, 1), (1,000, 2), (1,000, 1)
a. Construct a scatterplot.
b. Describe the correlation.
c. Should the scientists label the vitamin C intake the explanatory variable and the number of colds the response variable? Explain

the answer is d. (1.2, -4.7) on edgn

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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;

no

step-by-step explanation: