Answer:
For this case we can find the critical value with the significance level 
and if we find in the right tail of the z distribution we got:
The statistic is given by:
(1)
Replacing we got:
Since the calculated value is higher than the critical value we have enough evidence to reject the null hypothesis and we can conclude that the true proportion of households with one person is significantly higher than 0.27
Step-by-step explanation:
We have the following dataset given:
represent the households consisted of one person
represent the sample size
estimated proportion of households consisted of one person
We want to test the following hypothesis:
Null hypothesis: 
Alternative hypothesis: 
And for this case we can find the critical value with the significance level and if we find in the right tail of the z distribution we got:
The statistic is given by:
(1)
Replacing we got:
Since the calculated value is higher than the critical value we have enough evidence to reject the null hypothesis and we can conclude that the true proportion of households with one person is significantly higher than 0.27
C = 2πr = 2π(14) = 87.9645943005
∴ the circumference of the bicycle is around 88 inches.
The perimeter of the polygon, which is a trapezoid with the given parameters, is: A. 25 cm.
<h3>What is the Perimeter of a Polygon?</h3>
To find the perimeter of a polygon, sum all the length of the sides of the polygon.
Given the sides of the trapezoid as 8 cm, 5 cm, and two sides of 6 cm each
Perimeter = 8 + 5 + 6 + 6
Perimeter = 25 cm.
Learn more about perimeter of polygon on:
brainly.com/question/3310006
#SPJ4
Answer:
25%
Step-by-step explanation:
Step one:
A store normally sells certain dress for $160 during a special sale
the store reduces the price of the dress to $120
Step two:
Percent reduction= change in price/initial price *100
Percent reduction= 160-120/160 *100
Percent reduction= 40/160*100
Percent reduction==0.25*100
Percent reduction=25%
