Whats the unit rate for $2.50 for 5 ounces

For this case what we should do is find the cost per ounce.

For this, we can use the following rule of three:

5 ounces ----------------------> 2.50 $

1 oz ------------------------> x

From here, we clear the value of x.

We have then:

The unit cost per ounce is given by:

x = 0.5 $ / ounce

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;

3100

step-by-step explanation: