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 :-

see explanation

step-by-step explanation:

since the sequence is geometric there is a common ratio r between consecutive terms, that is

r = 4 ÷ - 2 = - 2

r = - 8 ÷ 4 = - 2

r = 16 ÷ 8 = - 2

the next term - 13 must be incorrect as it should be - 32 for the sequence to be geometric.

the first 4 terms are therefore geometric with common ratio r = - 2