1200 employees of a company were surveyed to find out whether they were satisfies with the company's insurance policy. the survey showed that 80% of the respondents were not satisfied with the policy.
the standard error of the proportion is _%
the number of people who are satisfied with the policy if between _% and _%
all answers are appreciated you

Answer with explanation:

Sample Size = 1200

it is also given that 80% of the respondents were not satisfied with the policy,Means 20% of the respondents were satisfied with the policy.

80% of 1200=960

20% of 1200 =240

Standard error of the proportion

= 0.0115 (Approx)

=0.0115×100

=1.15%

→→20% of the respondents are satisfied with the policy.

So, the number of people who are satisfied with the policy is between 20-1.15=18.85% and 20+1.15=21.15% that is (18.85%,21.15%).

b. an equilateral triangle inscribed in a circle

step-by-step explanation:

we are given the figure of two circles having a triangle inside.

now, we know that,

"when a figure is lying inside an another figure, then the outside figure is known as circumscribed figure and the figure lying inside is referred to as the inscribed figure".

as we see that, the circles are containing the triangle completely.

thus, the circles are the circumscribed figures and the triangle is the inscribed figure.

hence, we get, 'an equilateral triangle is inscribed in a circle'.

v = 1/3 a^2h

step-by-step explanation:

if the height is 57.7cm and the height of the slant edge is 18.2cm, then the volume is 1/3 a^2h.