62,591 + 7.1 x 10-2 in standard notations

0.000071

Step-by-step explanation:

The given number that is given in scientific notation is, (1)

We need to write this number in standard notation. A number can be written in scientific notation as :

(2)

In standard notation,  

So,  is equivalent to . Hence, the correct option is (d)

24 units

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;