Spiral Review One third of an orchestra's musicians play violin or viola and another one quarter play cello or contrabass What fraction of the orchestra's musicians play either violin, viola cello or contrabass
Enter the corect answers in the bores

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;

im with everythinglos so yeahhhhh

step-by-step explanation:

the awnser is visionary

2

step-by-step explanation: