Astudy studied the birth weights of 1,600 babies born in the united states. the mean weight was 3234 grams with a standard deviation of 871 grams. assume that birth weight data are approximately bell-shaped. estimate the number of newborns who weighed between 1492 grams and 4976 grams. write only a number as your answer. round your answer to the nearest whole number. hint: use the empirical rule.

1527

Step-by-step explanation:

Given: Mean :

Standard deviation :

The formula to calculate the z score is given by :-

For X=1492

The p-value of z =

For X=4976

The p-value of z =

Now, the probability of the newborns weighed between 1492 grams and 4976 grams is given by :-

Now, the number  newborns who weighed between 1492 grams and 4976 grams will be :-

50

step-by-step explanation:

the answer is:

the answer is:

to solve the problem, we need to remember the quotient of power property, it's defined by the following relation:

if we have a quotienf of powers that have the same base, we need to keep the same base and subtract the exponent of the denominator power to the exponent of the numerator power.

so, we are given the expression:

then, calculating we have:

hence, the answer is:

have a nice day!