Victoria want to conduct a survey to find out how much time students from her school spend doing science experiments. which of the following is an appropriate statistical question for this survey? A. How many times during the week does the best scientist perform science experiments?

B. How many of you perform science experiments for more than and hour every day?

C. How many of you perform science experiments for an hour everyday?

D. How many hours per week do you perform science experiments?

a

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;