Write the sets of points from -2 to 5 but exluding 2 and 5 as a union of intervals

we are given

to write the sets of points from -2 to 5 but excluding 2 and 5 as a union of intervals

so, first interval is

-2 to 2 by excluding 2

[-2,2)

Second  interval is

2 to 5 by excluding 2 and 5

so, we can write as

(2,5)

now, we can find total interval

we get

[-2,2) ∪ (2,5)Answer

these sign is used to tell weather the number is greater or less than the number   <   or >     but this sign means its equal =    

hope this you and

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;