Estimate 77.354 + 53.26 by rounding each number to the nearest whole number

130

Step-by-step explanation:

We round to the nearest number:

77.354 rounds down to 77

53.26 rounds down to 53

Now add the two rounded numbers.

77 + 53 = 130

Let me know if you have any questions.

Step-by-step explanation:

Rounding to nearest whole number means rounding up if the decimal is equal to or greater than .5 and rounding down when decimal is less than .5. In this case both numbers should be rounded down.

77+53=130

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;