Atelevision network commissioned a telephone poll of randomly sampled men. of the 708 respondents who had children, 19% said "yes" to the question "are you a stay-at-home dad? " to market commercial time, the network wants an accurate estimate of the true percentage of stay-at-home dads. construct a 90% confidence interval. left parenthesis nothing % comma nothing % right parenthesis

(16.6%, 21.4%)

Step-by-step explanation:

The confidence interval for proportion is given by :-

Given : Sample size : n= 708

The proportion of respondents who had children =

Significance level :

Critical value :

Now, the 90% confidence interval for proportion will be :-

Hence, the 90% confidence interval for the proportion = (16.6%, 21.4%)

-1/2 +2

step-by-step explanation:

solution:

→c= a b , that is product of a and b is possible only when when a is m × n matrix and b is n × p matrix.

that is, number of columns of a= number of rows of b.

so, size of matrix , c= a b is , if a = (m × n)matrix

b= (n × p)matrix

then a b = [ (m × n)matrix] ×[   (n × p)matrix ]

→→c= a b= [m × p ] matrix

→→size of product a b will be equal to = number of rows of a × number of columns of b