The races had 3,832 people in attendance on Thursday, 4,295 people on Friday, and 4,783 people on Saturday. If the racetrack seats 5,000 people, how many empty seats were there in all for the three races?

50.6

step-by-step explanation:

the two may have that, even a breakdown is probably offered

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;