Fatimah wants to estimate the proportion of students at her school who ate breakfast every day last week. She takes an SRS of 80 of the 1000 students at her school and finds that 20 of those sampled ate breakfast every
day last week.
Based on this sample, which of the following is a 95% confidence interval for the proportion of all students at
the school who ate breakfast every day last week?
Choose 1
20+ 0.080
20 + 0.095
0.25 +0.080

0.25±0.095

Step-by-step explanation:

P^= 20/80=.25

sample size n= 80

z*=1.96

p^± sqr(p^(1-p^)/n)

=0.095

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

2, 2, 2 or -4, 20, 29

step-by-step explanation:

there is two ways you can do it.