Lin's family has completed 60% of a trip. They have traveled 30 Miles. How long is the whole trip?

40 miles

Step-by-step explanation:

100 - 60 = 40. 40%

60 ÷ 30 = 2. 2 miles = 10%

10 * 4 = 40

ummm seems that u didnt post the attachement !

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;